157417640

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{15313}}^1$

素因数の和:15581

約数の個数: 32

約数和(自身を含む): 355591080

約数和(自身を除く): 198173440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 5140, 10280, 15313, 30626, 61252, 76565, 122504, 153130, 306260, 612520, 3935441, 7870882, 15741764, 19677205, 31483528, 39354410, 78708820, 157417640]

約数ペア:

[(1, 157417640), (2, 78708820), (4, 39354410), (5, 31483528), (8, 19677205), (10, 15741764), (20, 7870882), (40, 3935441), (257, 612520), (514, 306260), (1028, 153130), (1285, 122504), (2056, 76565), (2570, 61252), (5140, 30626), (10280, 15313)]