221497843

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{541}}^1\times {\mathrm{2543}}^1$

素因数の和:3114

約数の個数: 16

約数和(自身を含む): 264738816

約数和(自身を除く): 43240973

約数列:

[1, 7, 23, 161, 541, 2543, 3787, 12443, 17801, 58489, 87101, 409423, 1375763, 9630341, 31642549, 221497843]

約数ペア:

[(1, 221497843), (7, 31642549), (23, 9630341), (161, 1375763), (541, 409423), (2543, 87101), (3787, 58489), (12443, 17801)]