19917585

素因数分解:

$3^2\times 5^1\times {\mathrm{499}}^1\times {\mathrm{887}}^1$

素因数の和:1397

約数の個数: 24

約数和(自身を含む): 34632000

約数和(自身を除く): 14714415

約数列:

[1, 3, 5, 9, 15, 45, 499, 887, 1497, 2495, 2661, 4435, 4491, 7485, 7983, 13305, 22455, 39915, 442613, 1327839, 2213065, 3983517, 6639195, 19917585]

約数ペア:

[(1, 19917585), (3, 6639195), (5, 3983517), (9, 2213065), (15, 1327839), (45, 442613), (499, 39915), (887, 22455), (1497, 13305), (2495, 7983), (2661, 7485), (4435, 4491)]