20491664

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{75337}}^1$

素因数の和:75362

約数の個数: 20

約数和(自身を含む): 42038604

約数和(自身を除く): 21546940

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 75337, 150674, 301348, 602696, 1205392, 1280729, 2561458, 5122916, 10245832, 20491664]

約数ペア:

[(1, 20491664), (2, 10245832), (4, 5122916), (8, 2561458), (16, 1280729), (17, 1205392), (34, 602696), (68, 301348), (136, 150674), (272, 75337)]