257029409

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{166147}}^1$

素因数の和:166184

約数の個数: 16

約数和(自身を含む): 334954368

約数和(自身を除く): 77924959

約数列:

[1, 7, 13, 17, 91, 119, 221, 1547, 166147, 1163029, 2159911, 2824499, 15119377, 19771493, 36718487, 257029409]

約数ペア:

[(1, 257029409), (7, 36718487), (13, 19771493), (17, 15119377), (91, 2824499), (119, 2159911), (221, 1163029), (1547, 166147)]