21216328

素因数分解:

$2^3\times 7^1\times {\mathrm{227}}^1\times {\mathrm{1669}}^1$

素因数の和:1909

約数の個数: 32

約数和(自身を含む): 45691200

約数和(自身を除く): 24474872

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 227, 454, 908, 1589, 1669, 1816, 3178, 3338, 6356, 6676, 11683, 12712, 13352, 23366, 46732, 93464, 378863, 757726, 1515452, 2652041, 3030904, 5304082, 10608164, 21216328]

約数ペア:

[(1, 21216328), (2, 10608164), (4, 5304082), (7, 3030904), (8, 2652041), (14, 1515452), (28, 757726), (56, 378863), (227, 93464), (454, 46732), (908, 23366), (1589, 13352), (1669, 12712), (1816, 11683), (3178, 6676), (3338, 6356)]