81501840

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:286

約数の個数: 240

約数和(自身を含む): 317860608

約数和(自身を除く): 236358768

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, 103, 105, 112, 120, 126, 140, 144, 157, 168, 180, 206, 210, 240, 252, 280, 309, 314, 315, 336, 360, 412, 420, 471, 504, 515, 560, 618, 628, 630, 720, 721, 785, 824, 840, 927, 942, 1008, 1030, 1099, 1236, 1256, 1260, 1413, 1442, 1545, 1570, 1648, 1680, 1854, 1884, 2060, 2163, 2198, 2355, 2472, 2512, 2520, 2826, 2884, 3090, 3140, 3297, 3605, 3708, 3768, 4120, 4326, 4396, 4635, 4710, 4944, 5040, 5495, 5652, 5768, 6180, 6280, 6489, 6594, 7065, 7210, 7416, 7536, 8240, 8652, 8792, 9270, 9420, 9891, 10815, 10990, 11304, 11536, 12360, 12560, 12978, 13188, 14130, 14420, 14832, 16171, 16485, 17304, 17584, 18540, 18840, 19782, 21630, 21980, 22608, 24720, 25956, 26376, 28260, 28840, 32342, 32445, 32970, 34608, 37080, 37680, 39564, 43260, 43960, 48513, 49455, 51912, 52752, 56520, 57680, 64684, 64890, 65940, 74160, 79128, 80855, 86520, 87920, 97026, 98910, 103824, 113040, 113197, 129368, 129780, 131880, 145539, 158256, 161710, 173040, 194052, 197820, 226394, 242565, 258736, 259560, 263760, 291078, 323420, 339591, 388104, 395640, 452788, 485130, 519120, 565985, 582156, 646840, 679182, 727695, 776208, 791280, 905576, 970260, 1018773, 1131970, 1164312, 1293680, 1358364, 1455390, 1697955, 1811152, 1940520, 2037546, 2263940, 2328624, 2716728, 2910780, 3395910, 3881040, 4075092, 4527880, 5093865, 5433456, 5821560, 6791820, 8150184, 9055760, 10187730, 11643120, 13583640, 16300368, 20375460, 27167280, 40750920, 81501840]

約数ペア:

[(1, 81501840), (2, 40750920), (3, 27167280), (4, 20375460), (5, 16300368), (6, 13583640), (7, 11643120), (8, 10187730), (9, 9055760), (10, 8150184), (12, 6791820), (14, 5821560), (15, 5433456), (16, 5093865), (18, 4527880), (20, 4075092), (21, 3881040), (24, 3395910), (28, 2910780), (30, 2716728), (35, 2328624), (36, 2263940), (40, 2037546), (42, 1940520), (45, 1811152), (48, 1697955), (56, 1455390), (60, 1358364), (63, 1293680), (70, 1164312), (72, 1131970), (80, 1018773), (84, 970260), (90, 905576), (103, 791280), (105, 776208), (112, 727695), (120, 679182), (126, 646840), (140, 582156), (144, 565985), (157, 519120), (168, 485130), (180, 452788), (206, 395640), (210, 388104), (240, 339591), (252, 323420), (280, 291078), (309, 263760), (314, 259560), (315, 258736), (336, 242565), (360, 226394), (412, 197820), (420, 194052), (471, 173040), (504, 161710), (515, 158256), (560, 145539), (618, 131880), (628, 129780), (630, 129368), (720, 113197), (721, 113040), (785, 103824), (824, 98910), (840, 97026), (927, 87920), (942, 86520), (1008, 80855), (1030, 79128), (1099, 74160), (1236, 65940), (1256, 64890), (1260, 64684), (1413, 57680), (1442, 56520), (1545, 52752), (1570, 51912), (1648, 49455), (1680, 48513), (1854, 43960), (1884, 43260), (2060, 39564), (2163, 37680), (2198, 37080), (2355, 34608), (2472, 32970), (2512, 32445), (2520, 32342), (2826, 28840), (2884, 28260), (3090, 26376), (3140, 25956), (3297, 24720), (3605, 22608), (3708, 21980), (3768, 21630), (4120, 19782), (4326, 18840), (4396, 18540), (4635, 17584), (4710, 17304), (4944, 16485), (5040, 16171), (5495, 14832), (5652, 14420), (5768, 14130), (6180, 13188), (6280, 12978), (6489, 12560), (6594, 12360), (7065, 11536), (7210, 11304), (7416, 10990), (7536, 10815), (8240, 9891), (8652, 9420), (8792, 9270)]