21157128

素因数分解:

$2^3\times 3^2\times {\mathrm{31}}^1\times {\mathrm{9479}}^1$

素因数の和:9522

約数の個数: 48

約数和(自身を含む): 59155200

約数和(自身を除く): 37998072

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 31, 36, 62, 72, 93, 124, 186, 248, 279, 372, 558, 744, 1116, 2232, 9479, 18958, 28437, 37916, 56874, 75832, 85311, 113748, 170622, 227496, 293849, 341244, 587698, 682488, 881547, 1175396, 1763094, 2350792, 2644641, 3526188, 5289282, 7052376, 10578564, 21157128]

約数ペア:

[(1, 21157128), (2, 10578564), (3, 7052376), (4, 5289282), (6, 3526188), (8, 2644641), (9, 2350792), (12, 1763094), (18, 1175396), (24, 881547), (31, 682488), (36, 587698), (62, 341244), (72, 293849), (93, 227496), (124, 170622), (186, 113748), (248, 85311), (279, 75832), (372, 56874), (558, 37916), (744, 28437), (1116, 18958), (2232, 9479)]