61280919

素因数分解:

$3^2\times 7^2\times {\mathrm{138959}}^1$

素因数の和:138979

約数の個数: 18

約数和(自身を含む): 102969360

約数和(自身を除く): 41688441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 138959, 416877, 972713, 1250631, 2918139, 6808991, 8754417, 20426973, 61280919]

約数ペア:

[(1, 61280919), (3, 20426973), (7, 8754417), (9, 6808991), (21, 2918139), (49, 1250631), (63, 972713), (147, 416877), (441, 138959)]