21861585

素因数分解:

$3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{4457}}^1$

素因数の和:4577

約数の個数: 24

約数和(自身を含む): 38249640

約数和(自身を除く): 16388055

約数列:

[1, 3, 5, 9, 15, 45, 109, 327, 545, 981, 1635, 4457, 4905, 13371, 22285, 40113, 66855, 200565, 485813, 1457439, 2429065, 4372317, 7287195, 21861585]

約数ペア:

[(1, 21861585), (3, 7287195), (5, 4372317), (9, 2429065), (15, 1457439), (45, 485813), (109, 200565), (327, 66855), (545, 40113), (981, 22285), (1635, 13371), (4457, 4905)]