21274045

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{2389}}^1$

素因数の和:2544

約数の個数: 16

約数和(自身を含む): 27704880

約数和(自身を除く): 6430835

約数列:

[1, 5, 13, 65, 137, 685, 1781, 2389, 8905, 11945, 31057, 155285, 327293, 1636465, 4254809, 21274045]

約数ペア:

[(1, 21274045), (5, 4254809), (13, 1636465), (65, 327293), (137, 155285), (685, 31057), (1781, 11945), (2389, 8905)]