20412320

素因数分解:

$2^5\times 5^1\times {\mathrm{113}}^1\times {\mathrm{1129}}^1$

素因数の和:1257

約数の個数: 48

約数和(自身を含む): 48693960

約数和(自身を除く): 28281640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 113, 160, 226, 452, 565, 904, 1129, 1130, 1808, 2258, 2260, 3616, 4516, 4520, 5645, 9032, 9040, 11290, 18064, 18080, 22580, 36128, 45160, 90320, 127577, 180640, 255154, 510308, 637885, 1020616, 1275770, 2041232, 2551540, 4082464, 5103080, 10206160, 20412320]

約数ペア:

[(1, 20412320), (2, 10206160), (4, 5103080), (5, 4082464), (8, 2551540), (10, 2041232), (16, 1275770), (20, 1020616), (32, 637885), (40, 510308), (80, 255154), (113, 180640), (160, 127577), (226, 90320), (452, 45160), (565, 36128), (904, 22580), (1129, 18080), (1130, 18064), (1808, 11290), (2258, 9040), (2260, 9032), (3616, 5645), (4516, 4520)]