21118524

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{3541}}^1$

素因数の和:3626

約数の個数: 48

約数和(自身を含む): 57125376

約数和(自身を除く): 36006852

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 71, 84, 142, 213, 284, 426, 497, 852, 994, 1491, 1988, 2982, 3541, 5964, 7082, 10623, 14164, 21246, 24787, 42492, 49574, 74361, 99148, 148722, 251411, 297444, 502822, 754233, 1005644, 1508466, 1759877, 3016932, 3519754, 5279631, 7039508, 10559262, 21118524]

約数ペア:

[(1, 21118524), (2, 10559262), (3, 7039508), (4, 5279631), (6, 3519754), (7, 3016932), (12, 1759877), (14, 1508466), (21, 1005644), (28, 754233), (42, 502822), (71, 297444), (84, 251411), (142, 148722), (213, 99148), (284, 74361), (426, 49574), (497, 42492), (852, 24787), (994, 21246), (1491, 14164), (1988, 10623), (2982, 7082), (3541, 5964)]