21812745

素因数分解:

$3^1\times 5^1\times {\mathrm{223}}^1\times {\mathrm{6521}}^1$

素因数の和:6752

約数の個数: 16

約数和(自身を含む): 35062272

約数和(自身を除く): 13249527

約数列:

[1, 3, 5, 15, 223, 669, 1115, 3345, 6521, 19563, 32605, 97815, 1454183, 4362549, 7270915, 21812745]

約数ペア:

[(1, 21812745), (3, 7270915), (5, 4362549), (15, 1454183), (223, 97815), (669, 32605), (1115, 19563), (3345, 6521)]