28390765

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{25693}}^1$

素因数の和:25728

約数の個数: 16

約数和(自身を含む): 38849328

約数和(自身を除く): 10458563

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 25693, 128465, 334009, 436781, 1670045, 2183905, 5678153, 28390765]

約数ペア:

[(1, 28390765), (5, 5678153), (13, 2183905), (17, 1670045), (65, 436781), (85, 334009), (221, 128465), (1105, 25693)]