81211399920

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{409}}^1\times {\mathrm{39397}}^1$

素因数の和:39832

約数の個数: 240

約数和(自身を含む): 312467113920

約数和(自身を除く): 231255714000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 409, 420, 504, 560, 630, 720, 818, 840, 1008, 1227, 1260, 1636, 1680, 2045, 2454, 2520, 2863, 3272, 3681, 4090, 4908, 5040, 5726, 6135, 6544, 7362, 8180, 8589, 9816, 11452, 12270, 14315, 14724, 16360, 17178, 18405, 19632, 22904, 24540, 25767, 28630, 29448, 32720, 34356, 36810, 39397, 42945, 45808, 49080, 51534, 57260, 58896, 68712, 73620, 78794, 85890, 98160, 103068, 114520, 118191, 128835, 137424, 147240, 157588, 171780, 196985, 206136, 229040, 236382, 257670, 275779, 294480, 315176, 343560, 354573, 393970, 412272, 472764, 515340, 551558, 590955, 630352, 687120, 709146, 787940, 827337, 945528, 1030680, 1103116, 1181910, 1378895, 1418292, 1575880, 1654674, 1772865, 1891056, 2061360, 2206232, 2363820, 2482011, 2757790, 2836584, 3151760, 3309348, 3545730, 4136685, 4412464, 4727640, 4964022, 5515580, 5673168, 6618696, 7091460, 8273370, 9455280, 9928044, 11031160, 12410055, 13237392, 14182920, 16113373, 16546740, 19856088, 22062320, 24820110, 28365840, 32226746, 33093480, 39712176, 48340119, 49640220, 64453492, 66186960, 80566865, 96680238, 99280440, 112793611, 128906984, 145020357, 161133730, 193360476, 198560880, 225587222, 241700595, 257813968, 290040714, 322267460, 338380833, 386720952, 451174444, 483401190, 563968055, 580081428, 644534920, 676761666, 725101785, 773441904, 902348888, 966802380, 1015142499, 1127936110, 1160162856, 1289069840, 1353523332, 1450203570, 1691904165, 1804697776, 1933604760, 2030284998, 2255872220, 2320325712, 2707046664, 2900407140, 3383808330, 3867209520, 4060569996, 4511744440, 5075712495, 5414093328, 5800814280, 6767616660, 8121139992, 9023488880, 10151424990, 11601628560, 13535233320, 16242279984, 20302849980, 27070466640, 40605699960, 81211399920]

約数ペア:

[(1, 81211399920), (2, 40605699960), (3, 27070466640), (4, 20302849980), (5, 16242279984), (6, 13535233320), (7, 11601628560), (8, 10151424990), (9, 9023488880), (10, 8121139992), (12, 6767616660), (14, 5800814280), (15, 5414093328), (16, 5075712495), (18, 4511744440), (20, 4060569996), (21, 3867209520), (24, 3383808330), (28, 2900407140), (30, 2707046664), (35, 2320325712), (36, 2255872220), (40, 2030284998), (42, 1933604760), (45, 1804697776), (48, 1691904165), (56, 1450203570), (60, 1353523332), (63, 1289069840), (70, 1160162856), (72, 1127936110), (80, 1015142499), (84, 966802380), (90, 902348888), (105, 773441904), (112, 725101785), (120, 676761666), (126, 644534920), (140, 580081428), (144, 563968055), (168, 483401190), (180, 451174444), (210, 386720952), (240, 338380833), (252, 322267460), (280, 290040714), (315, 257813968), (336, 241700595), (360, 225587222), (409, 198560880), (420, 193360476), (504, 161133730), (560, 145020357), (630, 128906984), (720, 112793611), (818, 99280440), (840, 96680238), (1008, 80566865), (1227, 66186960), (1260, 64453492), (1636, 49640220), (1680, 48340119), (2045, 39712176), (2454, 33093480), (2520, 32226746), (2863, 28365840), (3272, 24820110), (3681, 22062320), (4090, 19856088), (4908, 16546740), (5040, 16113373), (5726, 14182920), (6135, 13237392), (6544, 12410055), (7362, 11031160), (8180, 9928044), (8589, 9455280), (9816, 8273370), (11452, 7091460), (12270, 6618696), (14315, 5673168), (14724, 5515580), (16360, 4964022), (17178, 4727640), (18405, 4412464), (19632, 4136685), (22904, 3545730), (24540, 3309348), (25767, 3151760), (28630, 2836584), (29448, 2757790), (32720, 2482011), (34356, 2363820), (36810, 2206232), (39397, 2061360), (42945, 1891056), (45808, 1772865), (49080, 1654674), (51534, 1575880), (57260, 1418292), (58896, 1378895), (68712, 1181910), (73620, 1103116), (78794, 1030680), (85890, 945528), (98160, 827337), (103068, 787940), (114520, 709146), (118191, 687120), (128835, 630352), (137424, 590955), (147240, 551558), (157588, 515340), (171780, 472764), (196985, 412272), (206136, 393970), (229040, 354573), (236382, 343560), (257670, 315176), (275779, 294480)]