20620240

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{2281}}^1$

素因数の和:2407

約数の個数: 40

約数和(自身を含む): 48387528

約数和(自身を除く): 27767288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2260, 2281, 4520, 4562, 9040, 9124, 11405, 18248, 22810, 36496, 45620, 91240, 182480, 257753, 515506, 1031012, 1288765, 2062024, 2577530, 4124048, 5155060, 10310120, 20620240]

約数ペア:

[(1, 20620240), (2, 10310120), (4, 5155060), (5, 4124048), (8, 2577530), (10, 2062024), (16, 1288765), (20, 1031012), (40, 515506), (80, 257753), (113, 182480), (226, 91240), (452, 45620), (565, 36496), (904, 22810), (1130, 18248), (1808, 11405), (2260, 9124), (2281, 9040), (4520, 4562)]