17688940

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{12457}}^1$

素因数の和:12537

約数の個数: 24

約数和(自身を含む): 37672992

約数和(自身を除く): 19984052

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 12457, 24914, 49828, 62285, 124570, 249140, 884447, 1768894, 3537788, 4422235, 8844470, 17688940]

約数ペア:

[(1, 17688940), (2, 8844470), (4, 4422235), (5, 3537788), (10, 1768894), (20, 884447), (71, 249140), (142, 124570), (284, 62285), (355, 49828), (710, 24914), (1420, 12457)]