621260440

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{137447}}^1$

素因数の和:137571

約数の個数: 32

約数和(自身を含む): 1410216480

約数和(自身を除く): 788956040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 137447, 274894, 549788, 687235, 1099576, 1374470, 2748940, 5497880, 15531511, 31063022, 62126044, 77657555, 124252088, 155315110, 310630220, 621260440]

約数ペア:

[(1, 621260440), (2, 310630220), (4, 155315110), (5, 124252088), (8, 77657555), (10, 62126044), (20, 31063022), (40, 15531511), (113, 5497880), (226, 2748940), (452, 1374470), (565, 1099576), (904, 687235), (1130, 549788), (2260, 274894), (4520, 137447)]