20686145

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{3607}}^1$

素因数の和:3680

約数の個数: 16

約数和(自身を含む): 26323968

約数和(自身を除く): 5637823

約数列:

[1, 5, 31, 37, 155, 185, 1147, 3607, 5735, 18035, 111817, 133459, 559085, 667295, 4137229, 20686145]

約数ペア:

[(1, 20686145), (5, 4137229), (31, 667295), (37, 559085), (155, 133459), (185, 111817), (1147, 18035), (3607, 5735)]