21388668

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{254627}}^1$

素因数の和:254641

約数の個数: 24

約数和(自身を含む): 57036672

約数和(自身を除く): 35648004

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 254627, 509254, 763881, 1018508, 1527762, 1782389, 3055524, 3564778, 5347167, 7129556, 10694334, 21388668]

約数ペア:

[(1, 21388668), (2, 10694334), (3, 7129556), (4, 5347167), (6, 3564778), (7, 3055524), (12, 1782389), (14, 1527762), (21, 1018508), (28, 763881), (42, 509254), (84, 254627)]