399217

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{107}}^1$

素因数の和:168

約数の個数: 16

約数和(自身を含む): 508032

約数和(自身を除く): 108815

約数列:

[1, 7, 13, 41, 91, 107, 287, 533, 749, 1391, 3731, 4387, 9737, 30709, 57031, 399217]

約数ペア:

[(1, 399217), (7, 57031), (13, 30709), (41, 9737), (91, 4387), (107, 3731), (287, 1391), (533, 749)]