209217020

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{2213}}^1$

素因数の和:2414

約数の個数: 48

約数和(自身を含む): 457500960

約数和(自身を除く): 248283940

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 163, 290, 326, 580, 652, 815, 1630, 2213, 3260, 4426, 4727, 8852, 9454, 11065, 18908, 22130, 23635, 44260, 47270, 64177, 94540, 128354, 256708, 320885, 360719, 641770, 721438, 1283540, 1442876, 1803595, 3607190, 7214380, 10460851, 20921702, 41843404, 52304255, 104608510, 209217020]

約数ペア:

[(1, 209217020), (2, 104608510), (4, 52304255), (5, 41843404), (10, 20921702), (20, 10460851), (29, 7214380), (58, 3607190), (116, 1803595), (145, 1442876), (163, 1283540), (290, 721438), (326, 641770), (580, 360719), (652, 320885), (815, 256708), (1630, 128354), (2213, 94540), (3260, 64177), (4426, 47270), (4727, 44260), (8852, 23635), (9454, 22130), (11065, 18908)]