20187665

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{937}}^1$

素因数の和:1112

約数の個数: 16

約数和(自身を含む): 25213440

約数和(自身を除く): 5025775

約数列:

[1, 5, 31, 139, 155, 695, 937, 4309, 4685, 21545, 29047, 130243, 145235, 651215, 4037533, 20187665]

約数ペア:

[(1, 20187665), (5, 4037533), (31, 651215), (139, 145235), (155, 130243), (695, 29047), (937, 21545), (4309, 4685)]