218888447

素因数分解:

${\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{277}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 253642752

約数和(自身を除く): 34754305

約数列:

[1, 17, 23, 43, 47, 277, 391, 731, 799, 989, 1081, 2021, 4709, 6371, 11911, 13019, 16813, 18377, 34357, 46483, 108307, 202487, 221323, 273953, 299437, 559817, 790211, 4657201, 5090429, 9516889, 12875791, 218888447]

約数ペア:

[(1, 218888447), (17, 12875791), (23, 9516889), (43, 5090429), (47, 4657201), (277, 790211), (391, 559817), (731, 299437), (799, 273953), (989, 221323), (1081, 202487), (2021, 108307), (4709, 46483), (6371, 34357), (11911, 18377), (13019, 16813)]