81767280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{409}}^1$

素因数の和:456

約数の個数: 240

約数和(自身を含む): 312971040

約数和(自身を除く): 231203760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 17, 20, 21, 24, 28, 30, 34, 35, 40, 42, 48, 49, 51, 56, 60, 68, 70, 80, 84, 85, 98, 102, 105, 112, 119, 120, 136, 140, 147, 168, 170, 196, 204, 210, 238, 240, 245, 255, 272, 280, 294, 336, 340, 357, 392, 408, 409, 420, 476, 490, 510, 560, 588, 595, 680, 714, 735, 784, 816, 818, 833, 840, 952, 980, 1020, 1176, 1190, 1227, 1360, 1428, 1470, 1636, 1666, 1680, 1785, 1904, 1960, 2040, 2045, 2352, 2380, 2454, 2499, 2856, 2863, 2940, 3272, 3332, 3570, 3920, 4080, 4090, 4165, 4760, 4908, 4998, 5712, 5726, 5880, 6135, 6544, 6664, 6953, 7140, 8180, 8330, 8589, 9520, 9816, 9996, 11452, 11760, 12270, 12495, 13328, 13906, 14280, 14315, 16360, 16660, 17178, 19632, 19992, 20041, 20859, 22904, 24540, 24990, 27812, 28560, 28630, 32720, 33320, 34356, 34765, 39984, 40082, 41718, 42945, 45808, 48671, 49080, 49980, 55624, 57260, 60123, 66640, 68712, 69530, 80164, 83436, 85890, 97342, 98160, 99960, 100205, 104295, 111248, 114520, 120246, 137424, 139060, 146013, 160328, 166872, 171780, 194684, 199920, 200410, 208590, 229040, 240492, 243355, 278120, 292026, 300615, 320656, 333744, 340697, 343560, 389368, 400820, 417180, 480984, 486710, 556240, 584052, 601230, 681394, 687120, 730065, 778736, 801640, 834360, 961968, 973420, 1022091, 1168104, 1202460, 1362788, 1460130, 1603280, 1668720, 1703485, 1946840, 2044182, 2336208, 2404920, 2725576, 2920260, 3406970, 3893680, 4088364, 4809840, 5110455, 5451152, 5840520, 6813940, 8176728, 10220910, 11681040, 13627880, 16353456, 20441820, 27255760, 40883640, 81767280]

約数ペア:

[(1, 81767280), (2, 40883640), (3, 27255760), (4, 20441820), (5, 16353456), (6, 13627880), (7, 11681040), (8, 10220910), (10, 8176728), (12, 6813940), (14, 5840520), (15, 5451152), (16, 5110455), (17, 4809840), (20, 4088364), (21, 3893680), (24, 3406970), (28, 2920260), (30, 2725576), (34, 2404920), (35, 2336208), (40, 2044182), (42, 1946840), (48, 1703485), (49, 1668720), (51, 1603280), (56, 1460130), (60, 1362788), (68, 1202460), (70, 1168104), (80, 1022091), (84, 973420), (85, 961968), (98, 834360), (102, 801640), (105, 778736), (112, 730065), (119, 687120), (120, 681394), (136, 601230), (140, 584052), (147, 556240), (168, 486710), (170, 480984), (196, 417180), (204, 400820), (210, 389368), (238, 343560), (240, 340697), (245, 333744), (255, 320656), (272, 300615), (280, 292026), (294, 278120), (336, 243355), (340, 240492), (357, 229040), (392, 208590), (408, 200410), (409, 199920), (420, 194684), (476, 171780), (490, 166872), (510, 160328), (560, 146013), (588, 139060), (595, 137424), (680, 120246), (714, 114520), (735, 111248), (784, 104295), (816, 100205), (818, 99960), (833, 98160), (840, 97342), (952, 85890), (980, 83436), (1020, 80164), (1176, 69530), (1190, 68712), (1227, 66640), (1360, 60123), (1428, 57260), (1470, 55624), (1636, 49980), (1666, 49080), (1680, 48671), (1785, 45808), (1904, 42945), (1960, 41718), (2040, 40082), (2045, 39984), (2352, 34765), (2380, 34356), (2454, 33320), (2499, 32720), (2856, 28630), (2863, 28560), (2940, 27812), (3272, 24990), (3332, 24540), (3570, 22904), (3920, 20859), (4080, 20041), (4090, 19992), (4165, 19632), (4760, 17178), (4908, 16660), (4998, 16360), (5712, 14315), (5726, 14280), (5880, 13906), (6135, 13328), (6544, 12495), (6664, 12270), (6953, 11760), (7140, 11452), (8180, 9996), (8330, 9816), (8589, 9520)]