639088

素因数分解:

$2^4\times {\mathrm{59}}^1\times {\mathrm{677}}^1$

素因数の和:744

約数の個数: 20

約数和(自身を含む): 1261080

約数和(自身を除く): 621992

約数列:

[1, 2, 4, 8, 16, 59, 118, 236, 472, 677, 944, 1354, 2708, 5416, 10832, 39943, 79886, 159772, 319544, 639088]

約数ペア:

[(1, 639088), (2, 319544), (4, 159772), (8, 79886), (16, 39943), (59, 10832), (118, 5416), (236, 2708), (472, 1354), (677, 944)]