90907690

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{2099}}^1$

素因数の和:2238

約数の個数: 32

約数和(自身を含む): 168739200

約数和(自身を除く): 77831510

約数列:

[1, 2, 5, 10, 61, 71, 122, 142, 305, 355, 610, 710, 2099, 4198, 4331, 8662, 10495, 20990, 21655, 43310, 128039, 149029, 256078, 298058, 640195, 745145, 1280390, 1490290, 9090769, 18181538, 45453845, 90907690]

約数ペア:

[(1, 90907690), (2, 45453845), (5, 18181538), (10, 9090769), (61, 1490290), (71, 1280390), (122, 745145), (142, 640195), (305, 298058), (355, 256078), (610, 149029), (710, 128039), (2099, 43310), (4198, 21655), (4331, 20990), (8662, 10495)]