90137680

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{27481}}^1$

素因数の和:27535

約数の個数: 40

約数和(自身を含む): 214689384

約数和(自身を除く): 124551704

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 27481, 54962, 109924, 137405, 219848, 274810, 439696, 549620, 1099240, 1126721, 2198480, 2253442, 4506884, 5633605, 9013768, 11267210, 18027536, 22534420, 45068840, 90137680]

約数ペア:

[(1, 90137680), (2, 45068840), (4, 22534420), (5, 18027536), (8, 11267210), (10, 9013768), (16, 5633605), (20, 4506884), (40, 2253442), (41, 2198480), (80, 1126721), (82, 1099240), (164, 549620), (205, 439696), (328, 274810), (410, 219848), (656, 137405), (820, 109924), (1640, 54962), (3280, 27481)]