86691980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71059}}^1$

素因数の和:71129

約数の個数: 24

約数和(自身を含む): 185040240

約数和(自身を除く): 98348260

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 71059, 142118, 284236, 355295, 710590, 1421180, 4334599, 8669198, 17338396, 21672995, 43345990, 86691980]

約数ペア:

[(1, 86691980), (2, 43345990), (4, 21672995), (5, 17338396), (10, 8669198), (20, 4334599), (61, 1421180), (122, 710590), (244, 355295), (305, 284236), (610, 142118), (1220, 71059)]