81799760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{43}}^2\times {\mathrm{79}}^1$

素因数の和:185

約数の個数: 120

約数和(自身を含む): 225342720

約数和(自身を除く): 143542960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 43, 56, 70, 79, 80, 86, 112, 140, 158, 172, 215, 280, 301, 316, 344, 395, 430, 553, 560, 602, 632, 688, 790, 860, 1106, 1204, 1264, 1505, 1580, 1720, 1849, 2212, 2408, 2765, 3010, 3160, 3397, 3440, 3698, 4424, 4816, 5530, 6020, 6320, 6794, 7396, 8848, 9245, 11060, 12040, 12943, 13588, 14792, 16985, 18490, 22120, 23779, 24080, 25886, 27176, 29584, 33970, 36980, 44240, 47558, 51772, 54352, 64715, 67940, 73960, 95116, 103544, 118895, 129430, 135880, 146071, 147920, 190232, 207088, 237790, 258860, 271760, 292142, 380464, 475580, 517720, 584284, 730355, 951160, 1022497, 1035440, 1168568, 1460710, 1902320, 2044994, 2337136, 2921420, 4089988, 5112485, 5842840, 8179976, 10224970, 11685680, 16359952, 20449940, 40899880, 81799760]

約数ペア:

[(1, 81799760), (2, 40899880), (4, 20449940), (5, 16359952), (7, 11685680), (8, 10224970), (10, 8179976), (14, 5842840), (16, 5112485), (20, 4089988), (28, 2921420), (35, 2337136), (40, 2044994), (43, 1902320), (56, 1460710), (70, 1168568), (79, 1035440), (80, 1022497), (86, 951160), (112, 730355), (140, 584284), (158, 517720), (172, 475580), (215, 380464), (280, 292142), (301, 271760), (316, 258860), (344, 237790), (395, 207088), (430, 190232), (553, 147920), (560, 146071), (602, 135880), (632, 129430), (688, 118895), (790, 103544), (860, 95116), (1106, 73960), (1204, 67940), (1264, 64715), (1505, 54352), (1580, 51772), (1720, 47558), (1849, 44240), (2212, 36980), (2408, 33970), (2765, 29584), (3010, 27176), (3160, 25886), (3397, 24080), (3440, 23779), (3698, 22120), (4424, 18490), (4816, 16985), (5530, 14792), (6020, 13588), (6320, 12943), (6794, 12040), (7396, 11060), (8848, 9245)]