21552675

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 37580928

約数和(自身を除く): 16028253

約数列:

[1, 3, 5, 15, 25, 41, 43, 75, 123, 129, 163, 205, 215, 489, 615, 645, 815, 1025, 1075, 1763, 2445, 3075, 3225, 4075, 5289, 6683, 7009, 8815, 12225, 20049, 21027, 26445, 33415, 35045, 44075, 100245, 105135, 132225, 167075, 175225, 287369, 501225, 525675, 862107, 1436845, 4310535, 7184225, 21552675]

約数ペア:

[(1, 21552675), (3, 7184225), (5, 4310535), (15, 1436845), (25, 862107), (41, 525675), (43, 501225), (75, 287369), (123, 175225), (129, 167075), (163, 132225), (205, 105135), (215, 100245), (489, 44075), (615, 35045), (645, 33415), (815, 26445), (1025, 21027), (1075, 20049), (1763, 12225), (2445, 8815), (3075, 7009), (3225, 6683), (4075, 5289)]