19961245

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{227}}^1\times {\mathrm{409}}^1$

素因数の和:684

約数の個数: 16

約数和(自身を含む): 24678720

約数和(自身を除く): 4717475

約数列:

[1, 5, 43, 215, 227, 409, 1135, 2045, 9761, 17587, 48805, 87935, 92843, 464215, 3992249, 19961245]

約数ペア:

[(1, 19961245), (5, 3992249), (43, 464215), (215, 92843), (227, 87935), (409, 48805), (1135, 17587), (2045, 9761)]