642668

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{727}}^1$

素因数の和:761

約数の個数: 24

約数和(自身を含む): 1284192

約数和(自身を除く): 641524

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 221, 442, 727, 884, 1454, 2908, 9451, 12359, 18902, 24718, 37804, 49436, 160667, 321334, 642668]

約数ペア:

[(1, 642668), (2, 321334), (4, 160667), (13, 49436), (17, 37804), (26, 24718), (34, 18902), (52, 12359), (68, 9451), (221, 2908), (442, 1454), (727, 884)]