21029816

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{1531}}^1$

素因数の和:1655

約数の個数: 32

約数和(自身を含む): 42191280

約数和(自身を除く): 21161464

約数列:

[1, 2, 4, 8, 17, 34, 68, 101, 136, 202, 404, 808, 1531, 1717, 3062, 3434, 6124, 6868, 12248, 13736, 26027, 52054, 104108, 154631, 208216, 309262, 618524, 1237048, 2628727, 5257454, 10514908, 21029816]

約数ペア:

[(1, 21029816), (2, 10514908), (4, 5257454), (8, 2628727), (17, 1237048), (34, 618524), (68, 309262), (101, 208216), (136, 154631), (202, 104108), (404, 52054), (808, 26027), (1531, 13736), (1717, 12248), (3062, 6868), (3434, 6124)]