21491848

素因数分解:

$2^3\times 7^1\times {\mathrm{223}}^1\times {\mathrm{1721}}^1$

素因数の和:1957

約数の個数: 32

約数和(自身を含む): 46287360

約数和(自身を除く): 24795512

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 223, 446, 892, 1561, 1721, 1784, 3122, 3442, 6244, 6884, 12047, 12488, 13768, 24094, 48188, 96376, 383783, 767566, 1535132, 2686481, 3070264, 5372962, 10745924, 21491848]

約数ペア:

[(1, 21491848), (2, 10745924), (4, 5372962), (7, 3070264), (8, 2686481), (14, 1535132), (28, 767566), (56, 383783), (223, 96376), (446, 48188), (892, 24094), (1561, 13768), (1721, 12488), (1784, 12047), (3122, 6884), (3442, 6244)]