81666428

素因数分解:

$2^2\times {\mathrm{53}}^1\times {\mathrm{227}}^1\times {\mathrm{1697}}^1$

素因数の和:1981

約数の個数: 24

約数和(自身を含む): 146340432

約数和(自身を除く): 64674004

約数列:

[1, 2, 4, 53, 106, 212, 227, 454, 908, 1697, 3394, 6788, 12031, 24062, 48124, 89941, 179882, 359764, 385219, 770438, 1540876, 20416607, 40833214, 81666428]

約数ペア:

[(1, 81666428), (2, 40833214), (4, 20416607), (53, 1540876), (106, 770438), (212, 385219), (227, 359764), (454, 179882), (908, 89941), (1697, 48124), (3394, 24062), (6788, 12031)]