1990201640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{1015409}}^1$

素因数の和:1015434

約数の個数: 48

約数和(自身を含む): 5209053300

約数和(自身を除く): 3218851660

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 1015409, 2030818, 4061636, 5077045, 7107863, 8123272, 10154090, 14215726, 20308180, 28431452, 35539315, 40616360, 49755041, 56862904, 71078630, 99510082, 142157260, 199020164, 248775205, 284314520, 398040328, 497550410, 995100820, 1990201640]

約数ペア:

[(1, 1990201640), (2, 995100820), (4, 497550410), (5, 398040328), (7, 284314520), (8, 248775205), (10, 199020164), (14, 142157260), (20, 99510082), (28, 71078630), (35, 56862904), (40, 49755041), (49, 40616360), (56, 35539315), (70, 28431452), (98, 20308180), (140, 14215726), (196, 10154090), (245, 8123272), (280, 7107863), (392, 5077045), (490, 4061636), (980, 2030818), (1960, 1015409)]