20887671

素因数分解:

$3^1\times 7^3\times {\mathrm{53}}^1\times {\mathrm{383}}^1$

素因数の和:460

約数の個数: 32

約数和(自身を含む): 33177600

約数和(自身を除く): 12289929

約数列:

[1, 3, 7, 21, 49, 53, 147, 159, 343, 371, 383, 1029, 1113, 1149, 2597, 2681, 7791, 8043, 18179, 18767, 20299, 54537, 56301, 60897, 131369, 142093, 394107, 426279, 994651, 2983953, 6962557, 20887671]

約数ペア:

[(1, 20887671), (3, 6962557), (7, 2983953), (21, 994651), (49, 426279), (53, 394107), (147, 142093), (159, 131369), (343, 60897), (371, 56301), (383, 54537), (1029, 20299), (1113, 18767), (1149, 18179), (2597, 8043), (2681, 7791)]