20959065

素因数分解:

$3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4273}}^1$

素因数の和:4393

約数の個数: 24

約数和(自身を含む): 36670920

約数和(自身を除く): 15711855

約数列:

[1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635, 4273, 4905, 12819, 21365, 38457, 64095, 192285, 465757, 1397271, 2328785, 4191813, 6986355, 20959065]

約数ペア:

[(1, 20959065), (3, 6986355), (5, 4191813), (9, 2328785), (15, 1397271), (45, 465757), (109, 192285), (327, 64095), (545, 38457), (981, 21365), (1635, 12819), (4273, 4905)]