21705435

素因数分解:

$3^3\times 5^1\times {\mathrm{160781}}^1$

素因数の和:160795

約数の個数: 16

約数和(自身を含む): 38587680

約数和(自身を除く): 16882245

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 160781, 482343, 803905, 1447029, 2411715, 4341087, 7235145, 21705435]

約数ペア:

[(1, 21705435), (3, 7235145), (5, 4341087), (9, 2411715), (15, 1447029), (27, 803905), (45, 482343), (135, 160781)]