20642320

素因数分解:

$2^4\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1583}}^1$

素因数の和:1759

約数の個数: 40

約数和(自身を含む): 48318336

約数和(自身を除く): 27676016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1304, 1583, 1630, 2608, 3166, 3260, 6332, 6520, 7915, 12664, 13040, 15830, 25328, 31660, 63320, 126640, 258029, 516058, 1032116, 1290145, 2064232, 2580290, 4128464, 5160580, 10321160, 20642320]

約数ペア:

[(1, 20642320), (2, 10321160), (4, 5160580), (5, 4128464), (8, 2580290), (10, 2064232), (16, 1290145), (20, 1032116), (40, 516058), (80, 258029), (163, 126640), (326, 63320), (652, 31660), (815, 25328), (1304, 15830), (1583, 13040), (1630, 12664), (2608, 7915), (3166, 6520), (3260, 6332)]