21877640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{32173}}^1$

素因数の和:32201

約数の個数: 32

約数和(自身を含む): 52121880

約数和(自身を除く): 30244240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 32173, 64346, 128692, 160865, 257384, 321730, 546941, 643460, 1093882, 1286920, 2187764, 2734705, 4375528, 5469410, 10938820, 21877640]

約数ペア:

[(1, 21877640), (2, 10938820), (4, 5469410), (5, 4375528), (8, 2734705), (10, 2187764), (17, 1286920), (20, 1093882), (34, 643460), (40, 546941), (68, 321730), (85, 257384), (136, 160865), (170, 128692), (340, 64346), (680, 32173)]