20699975

素因数分解:

$5^2\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{223}}^1$

素因数の和:359

約数の個数: 24

約数和(自身を含む): 26664960

約数和(自身を除く): 5964985

約数列:

[1, 5, 25, 47, 79, 223, 235, 395, 1115, 1175, 1975, 3713, 5575, 10481, 17617, 18565, 52405, 88085, 92825, 262025, 440425, 827999, 4139995, 20699975]

約数ペア:

[(1, 20699975), (5, 4139995), (25, 827999), (47, 440425), (79, 262025), (223, 92825), (235, 88085), (395, 52405), (1115, 18565), (1175, 17617), (1975, 10481), (3713, 5575)]