21606525

素因数分解:

$3^2\times 5^2\times {\mathrm{109}}^1\times {\mathrm{881}}^1$

素因数の和:1006

約数の個数: 36

約数和(自身を含む): 39099060

約数和(自身を除く): 17492535

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 109, 225, 327, 545, 881, 981, 1635, 2643, 2725, 4405, 4905, 7929, 8175, 13215, 22025, 24525, 39645, 66075, 96029, 198225, 288087, 480145, 864261, 1440435, 2400725, 4321305, 7202175, 21606525]

約数ペア:

[(1, 21606525), (3, 7202175), (5, 4321305), (9, 2400725), (15, 1440435), (25, 864261), (45, 480145), (75, 288087), (109, 198225), (225, 96029), (327, 66075), (545, 39645), (881, 24525), (981, 22025), (1635, 13215), (2643, 8175), (2725, 7929), (4405, 4905)]