20485730

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{66083}}^1$

素因数の和:66121

約数の個数: 16

約数和(自身を含む): 38064384

約数和(自身を除く): 17578654

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 66083, 132166, 330415, 660830, 2048573, 4097146, 10242865, 20485730]

約数ペア:

[(1, 20485730), (2, 10242865), (5, 4097146), (10, 2048573), (31, 660830), (62, 330415), (155, 132166), (310, 66083)]