84400040

素因数分解:

$2^3\times 5^1\times {\mathrm{2110001}}^1$

素因数の和:2110012

約数の個数: 16

約数和(自身を含む): 189900180

約数和(自身を除く): 105500140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2110001, 4220002, 8440004, 10550005, 16880008, 21100010, 42200020, 84400040]

約数ペア:

[(1, 84400040), (2, 42200020), (4, 21100010), (5, 16880008), (8, 10550005), (10, 8440004), (20, 4220002), (40, 2110001)]