20395115

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{7297}}^1$

素因数の和:7358

約数の個数: 16

約数和(自身を含む): 26973408

約数和(自身を除く): 6578293

約数列:

[1, 5, 13, 43, 65, 215, 559, 2795, 7297, 36485, 94861, 313771, 474305, 1568855, 4079023, 20395115]

約数ペア:

[(1, 20395115), (5, 4079023), (13, 1568855), (43, 474305), (65, 313771), (215, 94861), (559, 36485), (2795, 7297)]