399931

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:154

約数の個数: 16

約数和(自身を含む): 501760

約数和(自身を除く): 101829

約数列:

[1, 7, 19, 31, 97, 133, 217, 589, 679, 1843, 3007, 4123, 12901, 21049, 57133, 399931]

約数ペア:

[(1, 399931), (7, 57133), (19, 21049), (31, 12901), (97, 4123), (133, 3007), (217, 1843), (589, 679)]