639636985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{578857}}^1$

素因数の和:578892

約数の個数: 16

約数和(自身を含む): 875233296

約数和(自身を除く): 235596311

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 578857, 2894285, 7525141, 9840569, 37625705, 49202845, 127927397, 639636985]

約数ペア:

[(1, 639636985), (5, 127927397), (13, 49202845), (17, 37625705), (65, 9840569), (85, 7525141), (221, 2894285), (1105, 578857)]