20294680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72481}}^1$

素因数の和:72499

約数の個数: 32

約数和(自身を含む): 52187040

約数和(自身を除く): 31892360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72481, 144962, 289924, 362405, 507367, 579848, 724810, 1014734, 1449620, 2029468, 2536835, 2899240, 4058936, 5073670, 10147340, 20294680]

約数ペア:

[(1, 20294680), (2, 10147340), (4, 5073670), (5, 4058936), (7, 2899240), (8, 2536835), (10, 2029468), (14, 1449620), (20, 1014734), (28, 724810), (35, 579848), (40, 507367), (56, 362405), (70, 289924), (140, 144962), (280, 72481)]