20518174257

素因数分解:

$3^1\times 7^1\times {\mathrm{601}}^1\times {\mathrm{1625717}}^1$

素因数の和:1626328

約数の個数: 16

約数和(自身を含む): 31317831552

約数和(自身を除く): 10799657295

約数列:

[1, 3, 7, 21, 601, 1803, 4207, 12621, 1625717, 4877151, 11380019, 34140057, 977055917, 2931167751, 6839391419, 20518174257]

約数ペア:

[(1, 20518174257), (3, 6839391419), (7, 2931167751), (21, 977055917), (601, 34140057), (1803, 11380019), (4207, 4877151), (12621, 1625717)]