21068285

素因数分解:

$5^1\times 7^2\times {\mathrm{113}}^1\times {\mathrm{761}}^1$

素因数の和:893

約数の個数: 24

約数和(自身を含む): 29708856

約数和(自身を除く): 8640571

約数列:

[1, 5, 7, 35, 49, 113, 245, 565, 761, 791, 3805, 3955, 5327, 5537, 26635, 27685, 37289, 85993, 186445, 429965, 601951, 3009755, 4213657, 21068285]

約数ペア:

[(1, 21068285), (5, 4213657), (7, 3009755), (35, 601951), (49, 429965), (113, 186445), (245, 85993), (565, 37289), (761, 27685), (791, 26635), (3805, 5537), (3955, 5327)]