21254189

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{397}}^1$

素因数の和:596

約数の個数: 16

約数和(自身を含む): 24147456

約数和(自身を除く): 2893267

約数列:

[1, 11, 31, 157, 341, 397, 1727, 4367, 4867, 12307, 53537, 62329, 135377, 685619, 1932199, 21254189]

約数ペア:

[(1, 21254189), (11, 1932199), (31, 685619), (157, 135377), (341, 62329), (397, 53537), (1727, 12307), (4367, 4867)]