21358820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{152563}}^1$

素因数の和:152579

約数の個数: 24

約数和(自身を含む): 51261504

約数和(自身を除く): 29902684

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 152563, 305126, 610252, 762815, 1067941, 1525630, 2135882, 3051260, 4271764, 5339705, 10679410, 21358820]

約数ペア:

[(1, 21358820), (2, 10679410), (4, 5339705), (5, 4271764), (7, 3051260), (10, 2135882), (14, 1525630), (20, 1067941), (28, 762815), (35, 610252), (70, 305126), (140, 152563)]