85978280

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1\times {\mathrm{211}}^1$

素因数の和:450

約数の個数: 64

約数和(自身を含む): 198737280

約数和(自身を除く): 112759000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 167, 211, 244, 305, 334, 422, 488, 610, 668, 835, 844, 1055, 1220, 1336, 1670, 1688, 2110, 2440, 3340, 4220, 6680, 8440, 10187, 12871, 20374, 25742, 35237, 40748, 50935, 51484, 64355, 70474, 81496, 101870, 102968, 128710, 140948, 176185, 203740, 257420, 281896, 352370, 407480, 514840, 704740, 1409480, 2149457, 4298914, 8597828, 10747285, 17195656, 21494570, 42989140, 85978280]

約数ペア:

[(1, 85978280), (2, 42989140), (4, 21494570), (5, 17195656), (8, 10747285), (10, 8597828), (20, 4298914), (40, 2149457), (61, 1409480), (122, 704740), (167, 514840), (211, 407480), (244, 352370), (305, 281896), (334, 257420), (422, 203740), (488, 176185), (610, 140948), (668, 128710), (835, 102968), (844, 101870), (1055, 81496), (1220, 70474), (1336, 64355), (1670, 51484), (1688, 50935), (2110, 40748), (2440, 35237), (3340, 25742), (4220, 20374), (6680, 12871), (8440, 10187)]