21467719

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{13877}}^1$

素因数の和:13914

約数の個数: 16

約数和(自身を含む): 27978048

約数和(自身を除く): 6510329

約数列:

[1, 7, 13, 17, 91, 119, 221, 1547, 13877, 97139, 180401, 235909, 1262807, 1651363, 3066817, 21467719]

約数ペア:

[(1, 21467719), (7, 3066817), (13, 1651363), (17, 1262807), (91, 235909), (119, 180401), (221, 97139), (1547, 13877)]