21041570

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{971}}^1$

素因数の和:1186

約数の個数: 32

約数和(自身を含む): 41570496

約数和(自身を除く): 20528926

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 197, 394, 971, 985, 1942, 1970, 2167, 4334, 4855, 9710, 10681, 10835, 21362, 21670, 53405, 106810, 191287, 382574, 956435, 1912870, 2104157, 4208314, 10520785, 21041570]

約数ペア:

[(1, 21041570), (2, 10520785), (5, 4208314), (10, 2104157), (11, 1912870), (22, 956435), (55, 382574), (110, 191287), (197, 106810), (394, 53405), (971, 21670), (985, 21362), (1942, 10835), (1970, 10681), (2167, 9710), (4334, 4855)]