21156570

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7583}}^1$

素因数の和:7627

約数の個数: 48

約数和(自身を含む): 56788992

約数和(自身を除く): 35632422

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 155, 186, 279, 310, 465, 558, 930, 1395, 2790, 7583, 15166, 22749, 37915, 45498, 68247, 75830, 113745, 136494, 227490, 235073, 341235, 470146, 682470, 705219, 1175365, 1410438, 2115657, 2350730, 3526095, 4231314, 7052190, 10578285, 21156570]

約数ペア:

[(1, 21156570), (2, 10578285), (3, 7052190), (5, 4231314), (6, 3526095), (9, 2350730), (10, 2115657), (15, 1410438), (18, 1175365), (30, 705219), (31, 682470), (45, 470146), (62, 341235), (90, 235073), (93, 227490), (155, 136494), (186, 113745), (279, 75830), (310, 68247), (465, 45498), (558, 37915), (930, 22749), (1395, 15166), (2790, 7583)]