19796020

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{4691}}^1$

素因数の和:4911

約数の個数: 24

約数和(自身を含む): 41777568

約数和(自身を除く): 21981548

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 4691, 9382, 18764, 23455, 46910, 93820, 989801, 1979602, 3959204, 4949005, 9898010, 19796020]

約数ペア:

[(1, 19796020), (2, 9898010), (4, 4949005), (5, 3959204), (10, 1979602), (20, 989801), (211, 93820), (422, 46910), (844, 23455), (1055, 18764), (2110, 9382), (4220, 4691)]