21072842

素因数分解:

$2^1\times 7^2\times {\mathrm{101}}^1\times {\mathrm{2129}}^1$

素因数の和:2246

約数の個数: 24

約数和(自身を含む): 37151460

約数和(自身を除く): 16078618

約数列:

[1, 2, 7, 14, 49, 98, 101, 202, 707, 1414, 2129, 4258, 4949, 9898, 14903, 29806, 104321, 208642, 215029, 430058, 1505203, 3010406, 10536421, 21072842]

約数ペア:

[(1, 21072842), (2, 10536421), (7, 3010406), (14, 1505203), (49, 430058), (98, 215029), (101, 208642), (202, 104321), (707, 29806), (1414, 14903), (2129, 9898), (4258, 4949)]