21987070

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{163}}^1$

素因数の和:265

約数の個数: 64

約数和(自身を含む): 47609856

約数和(自身を除く): 25622786

約数列:

[1, 2, 5, 7, 10, 14, 35, 41, 47, 70, 82, 94, 163, 205, 235, 287, 326, 329, 410, 470, 574, 658, 815, 1141, 1435, 1630, 1645, 1927, 2282, 2870, 3290, 3854, 5705, 6683, 7661, 9635, 11410, 13366, 13489, 15322, 19270, 26978, 33415, 38305, 46781, 53627, 66830, 67445, 76610, 93562, 107254, 134890, 233905, 268135, 314101, 467810, 536270, 628202, 1570505, 2198707, 3141010, 4397414, 10993535, 21987070]

約数ペア:

[(1, 21987070), (2, 10993535), (5, 4397414), (7, 3141010), (10, 2198707), (14, 1570505), (35, 628202), (41, 536270), (47, 467810), (70, 314101), (82, 268135), (94, 233905), (163, 134890), (205, 107254), (235, 93562), (287, 76610), (326, 67445), (329, 66830), (410, 53627), (470, 46781), (574, 38305), (658, 33415), (815, 26978), (1141, 19270), (1435, 15322), (1630, 13489), (1645, 13366), (1927, 11410), (2282, 9635), (2870, 7661), (3290, 6683), (3854, 5705)]