15787880

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{137}}^1$

素因数の和:258

約数の個数: 64

約数和(自身を含む): 37160640

約数和(自身を除く): 21372760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 67, 86, 134, 137, 172, 215, 268, 274, 335, 344, 430, 536, 548, 670, 685, 860, 1096, 1340, 1370, 1720, 2680, 2740, 2881, 5480, 5762, 5891, 9179, 11524, 11782, 14405, 18358, 23048, 23564, 28810, 29455, 36716, 45895, 47128, 57620, 58910, 73432, 91790, 115240, 117820, 183580, 235640, 367160, 394697, 789394, 1578788, 1973485, 3157576, 3946970, 7893940, 15787880]

約数ペア:

[(1, 15787880), (2, 7893940), (4, 3946970), (5, 3157576), (8, 1973485), (10, 1578788), (20, 789394), (40, 394697), (43, 367160), (67, 235640), (86, 183580), (134, 117820), (137, 115240), (172, 91790), (215, 73432), (268, 58910), (274, 57620), (335, 47128), (344, 45895), (430, 36716), (536, 29455), (548, 28810), (670, 23564), (685, 23048), (860, 18358), (1096, 14405), (1340, 11782), (1370, 11524), (1720, 9179), (2680, 5891), (2740, 5762), (2881, 5480)]