2157745

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{647}}^1$

素因数の和:704

約数の個数: 16

約数和(自身を含む): 2799360

約数和(自身を除く): 641615

約数列:

[1, 5, 23, 29, 115, 145, 647, 667, 3235, 3335, 14881, 18763, 74405, 93815, 431549, 2157745]

約数ペア:

[(1, 2157745), (5, 431549), (23, 93815), (29, 74405), (115, 18763), (145, 14881), (647, 3335), (667, 3235)]