19889912

素因数分解:

$2^3\times 7^1\times {\mathrm{163}}^1\times {\mathrm{2179}}^1$

素因数の和:2355

約数の個数: 32

約数和(自身を含む): 42902400

約数和(自身を除く): 23012488

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 163, 326, 652, 1141, 1304, 2179, 2282, 4358, 4564, 8716, 9128, 15253, 17432, 30506, 61012, 122024, 355177, 710354, 1420708, 2486239, 2841416, 4972478, 9944956, 19889912]

約数ペア:

[(1, 19889912), (2, 9944956), (4, 4972478), (7, 2841416), (8, 2486239), (14, 1420708), (28, 710354), (56, 355177), (163, 122024), (326, 61012), (652, 30506), (1141, 17432), (1304, 15253), (2179, 9128), (2282, 8716), (4358, 4564)]