20617790

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{66509}}^1$

素因数の和:66547

約数の個数: 16

約数和(自身を含む): 38309760

約数和(自身を除く): 17691970

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 66509, 133018, 332545, 665090, 2061779, 4123558, 10308895, 20617790]

約数ペア:

[(1, 20617790), (2, 10308895), (5, 4123558), (10, 2061779), (31, 665090), (62, 332545), (155, 133018), (310, 66509)]