21101010

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1129}}^1$

素因数の和:1235

約数の個数: 64

約数和(自身を含む): 58579200

約数和(自身を除く): 37478190

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 89, 105, 178, 210, 267, 445, 534, 623, 890, 1129, 1246, 1335, 1869, 2258, 2670, 3115, 3387, 3738, 5645, 6230, 6774, 7903, 9345, 11290, 15806, 16935, 18690, 23709, 33870, 39515, 47418, 79030, 100481, 118545, 200962, 237090, 301443, 502405, 602886, 703367, 1004810, 1406734, 1507215, 2110101, 3014430, 3516835, 4220202, 7033670, 10550505, 21101010]

約数ペア:

[(1, 21101010), (2, 10550505), (3, 7033670), (5, 4220202), (6, 3516835), (7, 3014430), (10, 2110101), (14, 1507215), (15, 1406734), (21, 1004810), (30, 703367), (35, 602886), (42, 502405), (70, 301443), (89, 237090), (105, 200962), (178, 118545), (210, 100481), (267, 79030), (445, 47418), (534, 39515), (623, 33870), (890, 23709), (1129, 18690), (1246, 16935), (1335, 15806), (1869, 11290), (2258, 9345), (2670, 7903), (3115, 6774), (3387, 6230), (3738, 5645)]