20899664

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{76837}}^1$

素因数の和:76862

約数の個数: 20

約数和(自身を含む): 42875604

約数和(自身を除く): 21975940

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 76837, 153674, 307348, 614696, 1229392, 1306229, 2612458, 5224916, 10449832, 20899664]

約数ペア:

[(1, 20899664), (2, 10449832), (4, 5224916), (8, 2612458), (16, 1306229), (17, 1229392), (34, 614696), (68, 307348), (136, 153674), (272, 76837)]