21002890

素因数分解:

$2^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{44687}}^1$

素因数の和:44741

約数の個数: 16

約数和(自身を含む): 38610432

約数和(自身を除く): 17607542

約数列:

[1, 2, 5, 10, 47, 94, 235, 470, 44687, 89374, 223435, 446870, 2100289, 4200578, 10501445, 21002890]

約数ペア:

[(1, 21002890), (2, 10501445), (5, 4200578), (10, 2100289), (47, 446870), (94, 223435), (235, 89374), (470, 44687)]