221216401

素因数分解:

$7^1\times {\mathrm{107}}^1\times {\mathrm{263}}^1\times {\mathrm{1123}}^1$

素因数の和:1500

約数の個数: 16

約数和(自身を含む): 256379904

約数和(自身を除く): 35163503

約数列:

[1, 7, 107, 263, 749, 1123, 1841, 7861, 28141, 120161, 196987, 295349, 841127, 2067443, 31602343, 221216401]

約数ペア:

[(1, 221216401), (7, 31602343), (107, 2067443), (263, 841127), (749, 295349), (1123, 196987), (1841, 120161), (7861, 28141)]