2021620180

素因数分解:

$2^2\times 5^1\times {\mathrm{991}}^1\times {\mathrm{101999}}^1$

素因数の和:102999

約数の個数: 24

約数和(自身を含む): 4249728000

約数和(自身を除く): 2228107820

約数列:

[1, 2, 4, 5, 10, 20, 991, 1982, 3964, 4955, 9910, 19820, 101999, 203998, 407996, 509995, 1019990, 2039980, 101081009, 202162018, 404324036, 505405045, 1010810090, 2021620180]

約数ペア:

[(1, 2021620180), (2, 1010810090), (4, 505405045), (5, 404324036), (10, 202162018), (20, 101081009), (991, 2039980), (1982, 1019990), (3964, 509995), (4955, 407996), (9910, 203998), (19820, 101999)]