20390085

素因数分解:

$3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4157}}^1$

素因数の和:4277

約数の個数: 24

約数和(自身を含む): 35675640

約数和(自身を除く): 15285555

約数列:

[1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635, 4157, 4905, 12471, 20785, 37413, 62355, 187065, 453113, 1359339, 2265565, 4078017, 6796695, 20390085]

約数ペア:

[(1, 20390085), (3, 6796695), (5, 4078017), (9, 2265565), (15, 1359339), (45, 453113), (109, 187065), (327, 62355), (545, 37413), (981, 20785), (1635, 12471), (4157, 4905)]