212009721

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{131113}}^1$

素因数の和:131141

約数の個数: 24

約数和(自身を含む): 358727904

約数和(自身を除く): 146718183

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 131113, 393339, 917791, 1442243, 2753373, 4326729, 6424537, 10095701, 19273611, 30287103, 70669907, 212009721]

約数ペア:

[(1, 212009721), (3, 70669907), (7, 30287103), (11, 19273611), (21, 10095701), (33, 6424537), (49, 4326729), (77, 2753373), (147, 1442243), (231, 917791), (539, 393339), (1617, 131113)]