21254607

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{173}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 36155808

約数和(自身を除く): 14901201

約数列:

[1, 3, 9, 11, 17, 33, 51, 73, 99, 153, 173, 187, 219, 519, 561, 657, 803, 1241, 1557, 1683, 1903, 2409, 2941, 3723, 5709, 7227, 8823, 11169, 12629, 13651, 17127, 26469, 32351, 37887, 40953, 97053, 113661, 122859, 138919, 214693, 291159, 416757, 644079, 1250271, 1932237, 2361623, 7084869, 21254607]

約数ペア:

[(1, 21254607), (3, 7084869), (9, 2361623), (11, 1932237), (17, 1250271), (33, 644079), (51, 416757), (73, 291159), (99, 214693), (153, 138919), (173, 122859), (187, 113661), (219, 97053), (519, 40953), (561, 37887), (657, 32351), (803, 26469), (1241, 17127), (1557, 13651), (1683, 12629), (1903, 11169), (2409, 8823), (2941, 7227), (3723, 5709)]