221617921

素因数分解:

$7^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1\times {\mathrm{2801}}^1$

素因数の和:3024

約数の個数: 16

約数和(自身を含む): 258232320

約数和(自身を除く): 36614399

約数列:

[1, 7, 89, 127, 623, 889, 2801, 11303, 19607, 79121, 249289, 355727, 1745023, 2490089, 31659703, 221617921]

約数ペア:

[(1, 221617921), (7, 31659703), (89, 2490089), (127, 1745023), (623, 355727), (889, 249289), (2801, 79121), (11303, 19607)]