21307167

素因数分解:

$3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{113}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 36848448

約数和(自身を除く): 15541281

約数列:

[1, 3, 7, 9, 21, 41, 63, 73, 113, 123, 219, 287, 339, 369, 511, 657, 791, 861, 1017, 1533, 2373, 2583, 2993, 4599, 4633, 7119, 8249, 8979, 13899, 20951, 24747, 26937, 32431, 41697, 57743, 62853, 74241, 97293, 173229, 188559, 291879, 338209, 519687, 1014627, 2367463, 3043881, 7102389, 21307167]

約数ペア:

[(1, 21307167), (3, 7102389), (7, 3043881), (9, 2367463), (21, 1014627), (41, 519687), (63, 338209), (73, 291879), (113, 188559), (123, 173229), (219, 97293), (287, 74241), (339, 62853), (369, 57743), (511, 41697), (657, 32431), (791, 26937), (861, 24747), (1017, 20951), (1533, 13899), (2373, 8979), (2583, 8249), (2993, 7119), (4599, 4633)]