490625680

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{1481}}^1$

素因数の和:1636

約数の個数: 80

約数和(自身を含む): 1180893168

約数和(自身を除く): 690267488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 101, 164, 202, 205, 328, 404, 410, 505, 656, 808, 820, 1010, 1481, 1616, 1640, 2020, 2962, 3280, 4040, 4141, 5924, 7405, 8080, 8282, 11848, 14810, 16564, 20705, 23696, 29620, 33128, 41410, 59240, 60721, 66256, 82820, 118480, 121442, 149581, 165640, 242884, 299162, 303605, 331280, 485768, 598324, 607210, 747905, 971536, 1196648, 1214420, 1495810, 2393296, 2428840, 2991620, 4857680, 5983240, 6132821, 11966480, 12265642, 24531284, 30664105, 49062568, 61328210, 98125136, 122656420, 245312840, 490625680]

約数ペア:

[(1, 490625680), (2, 245312840), (4, 122656420), (5, 98125136), (8, 61328210), (10, 49062568), (16, 30664105), (20, 24531284), (40, 12265642), (41, 11966480), (80, 6132821), (82, 5983240), (101, 4857680), (164, 2991620), (202, 2428840), (205, 2393296), (328, 1495810), (404, 1214420), (410, 1196648), (505, 971536), (656, 747905), (808, 607210), (820, 598324), (1010, 485768), (1481, 331280), (1616, 303605), (1640, 299162), (2020, 242884), (2962, 165640), (3280, 149581), (4040, 121442), (4141, 118480), (5924, 82820), (7405, 66256), (8080, 60721), (8282, 59240), (11848, 41410), (14810, 33128), (16564, 29620), (20705, 23696)]