668746

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{89}}^1$

素因数の和:138

約数の個数: 24

約数和(自身を含む): 1160460

約数和(自身を除く): 491714

約数列:

[1, 2, 13, 17, 26, 34, 89, 178, 221, 289, 442, 578, 1157, 1513, 2314, 3026, 3757, 7514, 19669, 25721, 39338, 51442, 334373, 668746]

約数ペア:

[(1, 668746), (2, 334373), (13, 51442), (17, 39338), (26, 25721), (34, 19669), (89, 7514), (178, 3757), (221, 3026), (289, 2314), (442, 1513), (578, 1157)]