21495290

素因数分解:

$2^1\times 5^1\times {\mathrm{1249}}^1\times {\mathrm{1721}}^1$

素因数の和:2977

約数の個数: 16

約数和(自身を含む): 38745000

約数和(自身を除く): 17249710

約数列:

[1, 2, 5, 10, 1249, 1721, 2498, 3442, 6245, 8605, 12490, 17210, 2149529, 4299058, 10747645, 21495290]

約数ペア:

[(1, 21495290), (2, 10747645), (5, 4299058), (10, 2149529), (1249, 17210), (1721, 12490), (2498, 8605), (3442, 6245)]