19874841

素因数分解:

$3^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{2551}}^1$

素因数の和:2621

約数の個数: 24

約数和(自身を含む): 31420224

約数和(自身を除く): 11545383

約数列:

[1, 3, 7, 21, 49, 53, 147, 159, 371, 1113, 2551, 2597, 7653, 7791, 17857, 53571, 124999, 135203, 374997, 405609, 946421, 2839263, 6624947, 19874841]

約数ペア:

[(1, 19874841), (3, 6624947), (7, 2839263), (21, 946421), (49, 405609), (53, 374997), (147, 135203), (159, 124999), (371, 53571), (1113, 17857), (2551, 7791), (2597, 7653)]