21205428

素因数分解:

$2^2\times 3^1\times {\mathrm{71}}^1\times {\mathrm{24889}}^1$

素因数の和:24967

約数の個数: 24

約数和(自身を含む): 50178240

約数和(自身を除く): 28972812

約数列:

[1, 2, 3, 4, 6, 12, 71, 142, 213, 284, 426, 852, 24889, 49778, 74667, 99556, 149334, 298668, 1767119, 3534238, 5301357, 7068476, 10602714, 21205428]

約数ペア:

[(1, 21205428), (2, 10602714), (3, 7068476), (4, 5301357), (6, 3534238), (12, 1767119), (71, 298668), (142, 149334), (213, 99556), (284, 74667), (426, 49778), (852, 24889)]