21086745

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61121}}^1$

素因数の和:61152

約数の個数: 16

約数和(自身を含む): 35206272

約数和(自身を除く): 14119527

約数列:

[1, 3, 5, 15, 23, 69, 115, 345, 61121, 183363, 305605, 916815, 1405783, 4217349, 7028915, 21086745]

約数ペア:

[(1, 21086745), (3, 7028915), (5, 4217349), (15, 1405783), (23, 916815), (69, 305605), (115, 183363), (345, 61121)]