21966890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{691}}^1$

素因数の和:743

約数の個数: 48

約数和(自身を含む): 45887904

約数和(自身を除く): 23921014

約数列:

[1, 2, 5, 10, 11, 17, 22, 34, 55, 85, 110, 170, 187, 289, 374, 578, 691, 935, 1382, 1445, 1870, 2890, 3179, 3455, 6358, 6910, 7601, 11747, 15202, 15895, 23494, 31790, 38005, 58735, 76010, 117470, 129217, 199699, 258434, 399398, 646085, 998495, 1292170, 1996990, 2196689, 4393378, 10983445, 21966890]

約数ペア:

[(1, 21966890), (2, 10983445), (5, 4393378), (10, 2196689), (11, 1996990), (17, 1292170), (22, 998495), (34, 646085), (55, 399398), (85, 258434), (110, 199699), (170, 129217), (187, 117470), (289, 76010), (374, 58735), (578, 38005), (691, 31790), (935, 23494), (1382, 15895), (1445, 15202), (1870, 11747), (2890, 7601), (3179, 6910), (3455, 6358)]