1639253

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{349}}^1$

素因数の和:428

約数の個数: 16

約数和(自身を含む): 2083200

約数和(自身を除く): 443947

約数列:

[1, 7, 11, 61, 77, 349, 427, 671, 2443, 3839, 4697, 21289, 26873, 149023, 234179, 1639253]

約数ペア:

[(1, 1639253), (7, 234179), (11, 149023), (61, 26873), (77, 21289), (349, 4697), (427, 3839), (671, 2443)]