19815010

素因数分解:

$2^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{9391}}^1$

素因数の和:9609

約数の個数: 16

約数和(自身を含む): 35839872

約数和(自身を除く): 16024862

約数列:

[1, 2, 5, 10, 211, 422, 1055, 2110, 9391, 18782, 46955, 93910, 1981501, 3963002, 9907505, 19815010]

約数ペア:

[(1, 19815010), (2, 9907505), (5, 3963002), (10, 1981501), (211, 93910), (422, 46955), (1055, 18782), (2110, 9391)]