313639240

素因数分解:

$2^3\times 5^1\times {\mathrm{7840981}}^1$

素因数の和:7840992

約数の個数: 16

約数和(自身を含む): 705688380

約数和(自身を除く): 392049140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7840981, 15681962, 31363924, 39204905, 62727848, 78409810, 156819620, 313639240]

約数ペア:

[(1, 313639240), (2, 156819620), (4, 78409810), (5, 62727848), (8, 39204905), (10, 31363924), (20, 15681962), (40, 7840981)]