520099820

素因数分解:

$2^2\times 5^1\times {\mathrm{1999}}^1\times {\mathrm{13009}}^1$

素因数の和:15017

約数の個数: 24

約数和(自身を含む): 1092840000

約数和(自身を除く): 572740180

約数列:

[1, 2, 4, 5, 10, 20, 1999, 3998, 7996, 9995, 13009, 19990, 26018, 39980, 52036, 65045, 130090, 260180, 26004991, 52009982, 104019964, 130024955, 260049910, 520099820]

約数ペア:

[(1, 520099820), (2, 260049910), (4, 130024955), (5, 104019964), (10, 52009982), (20, 26004991), (1999, 260180), (3998, 130090), (7996, 65045), (9995, 52036), (13009, 39980), (19990, 26018)]