21497788

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{1249}}^1$

素因数の和:1597

約数の個数: 24

約数和(自身を含む): 40670000

約数和(自身を除く): 19172212

約数列:

[1, 2, 4, 13, 26, 52, 331, 662, 1249, 1324, 2498, 4303, 4996, 8606, 16237, 17212, 32474, 64948, 413419, 826838, 1653676, 5374447, 10748894, 21497788]

約数ペア:

[(1, 21497788), (2, 10748894), (4, 5374447), (13, 1653676), (26, 826838), (52, 413419), (331, 64948), (662, 32474), (1249, 17212), (1324, 16237), (2498, 8606), (4303, 4996)]