21103851

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{751}}^1$

素因数の和:819

約数の個数: 32

約数和(自身を含む): 32486400

約数和(自身を除く): 11382549

約数列:

[1, 3, 17, 19, 29, 51, 57, 87, 323, 493, 551, 751, 969, 1479, 1653, 2253, 9367, 12767, 14269, 21779, 28101, 38301, 42807, 65337, 242573, 370243, 413801, 727719, 1110729, 1241403, 7034617, 21103851]

約数ペア:

[(1, 21103851), (3, 7034617), (17, 1241403), (19, 1110729), (29, 727719), (51, 413801), (57, 370243), (87, 242573), (323, 65337), (493, 42807), (551, 38301), (751, 28101), (969, 21779), (1479, 14269), (1653, 12767), (2253, 9367)]