3971394189

素因数分解:

$3^2\times 7^2\times {\mathrm{9005429}}^1$

素因数の和:9005449

約数の個数: 18

約数和(自身を含む): 6673023630

約数和(自身を除く): 2701629441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 9005429, 27016287, 63038003, 81048861, 189114009, 441266021, 567342027, 1323798063, 3971394189]

約数ペア:

[(1, 3971394189), (3, 1323798063), (7, 567342027), (9, 441266021), (21, 189114009), (49, 81048861), (63, 63038003), (147, 27016287), (441, 9005429)]