172421168

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{68639}}^1$

素因数の和:68804

約数の個数: 20

約数和(自身を含む): 336198720

約数和(自身を除く): 163777552

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 68639, 137278, 274556, 549112, 1098224, 10776323, 21552646, 43105292, 86210584, 172421168]

約数ペア:

[(1, 172421168), (2, 86210584), (4, 43105292), (8, 21552646), (16, 10776323), (157, 1098224), (314, 549112), (628, 274556), (1256, 137278), (2512, 68639)]