20438790477

素因数分解:

$3^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{1349897}}^1$

素因数の和:1350017

約数の個数: 24

約数和(自身を含む): 32008781376

約数和(自身を除く): 11569990899

約数列:

[1, 3, 7, 21, 49, 103, 147, 309, 721, 2163, 5047, 15141, 1349897, 4049691, 9449279, 28347837, 66144953, 139039391, 198434859, 417118173, 973275737, 2919827211, 6812930159, 20438790477]

約数ペア:

[(1, 20438790477), (3, 6812930159), (7, 2919827211), (21, 973275737), (49, 417118173), (103, 198434859), (147, 139039391), (309, 66144953), (721, 28347837), (2163, 9449279), (5047, 4049691), (15141, 1349897)]