19509020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15991}}^1$

素因数の和:16061

約数の個数: 24

約数和(自身を含む): 41643168

約数和(自身を除く): 22134148

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 15991, 31982, 63964, 79955, 159910, 319820, 975451, 1950902, 3901804, 4877255, 9754510, 19509020]

約数ペア:

[(1, 19509020), (2, 9754510), (4, 4877255), (5, 3901804), (10, 1950902), (20, 975451), (61, 319820), (122, 159910), (244, 79955), (305, 63964), (610, 31982), (1220, 15991)]