19872515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{8263}}^1$

素因数の和:8318

約数の個数: 16

約数和(自身を含む): 26378688

約数和(自身を除く): 6506173

約数列:

[1, 5, 13, 37, 65, 185, 481, 2405, 8263, 41315, 107419, 305731, 537095, 1528655, 3974503, 19872515]

約数ペア:

[(1, 19872515), (5, 3974503), (13, 1528655), (37, 537095), (65, 305731), (185, 107419), (481, 41315), (2405, 8263)]