20503015

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{5171}}^1$

素因数の和:5250

約数の個数: 16

約数和(自身を含む): 26935776

約数和(自身を除く): 6432761

約数列:

[1, 5, 13, 61, 65, 305, 793, 3965, 5171, 25855, 67223, 315431, 336115, 1577155, 4100603, 20503015]

約数ペア:

[(1, 20503015), (5, 4100603), (13, 1577155), (61, 336115), (65, 315431), (305, 67223), (793, 25855), (3965, 5171)]