20990025

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{13327}}^1$

素因数の和:13350

約数の個数: 36

約数和(自身を含む): 42969472

約数和(自身を除く): 21979447

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 175, 225, 315, 525, 1575, 13327, 39981, 66635, 93289, 119943, 199905, 279867, 333175, 466445, 599715, 839601, 999525, 1399335, 2332225, 2998575, 4198005, 6996675, 20990025]

約数ペア:

[(1, 20990025), (3, 6996675), (5, 4198005), (7, 2998575), (9, 2332225), (15, 1399335), (21, 999525), (25, 839601), (35, 599715), (45, 466445), (63, 333175), (75, 279867), (105, 199905), (175, 119943), (225, 93289), (315, 66635), (525, 39981), (1575, 13327)]