28013921

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{419}}^1$

素因数の和:608

約数の個数: 16

約数和(自身を含む): 31281600

約数和(自身を除く): 3267679

約数列:

[1, 13, 37, 139, 419, 481, 1807, 5143, 5447, 15503, 58241, 66859, 201539, 757133, 2154917, 28013921]

約数ペア:

[(1, 28013921), (13, 2154917), (37, 757133), (139, 201539), (419, 66859), (481, 58241), (1807, 15503), (5143, 5447)]