21169617

素因数分解:

$3^1\times 7^4\times {\mathrm{2939}}^1$

素因数の和:2970

約数の個数: 20

約数和(自身を含む): 32939760

約数和(自身を除く): 11770143

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 2939, 7203, 8817, 20573, 61719, 144011, 432033, 1008077, 3024231, 7056539, 21169617]

約数ペア:

[(1, 21169617), (3, 7056539), (7, 3024231), (21, 1008077), (49, 432033), (147, 144011), (343, 61719), (1029, 20573), (2401, 8817), (2939, 7203)]