21000645

素因数分解:

$3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{12613}}^1$

素因数の和:12661

約数の個数: 24

約数和(自身を含む): 37387896

約数和(自身を除く): 16387251

約数列:

[1, 3, 5, 9, 15, 37, 45, 111, 185, 333, 555, 1665, 12613, 37839, 63065, 113517, 189195, 466681, 567585, 1400043, 2333405, 4200129, 7000215, 21000645]

約数ペア:

[(1, 21000645), (3, 7000215), (5, 4200129), (9, 2333405), (15, 1400043), (37, 567585), (45, 466681), (111, 189195), (185, 113517), (333, 63065), (555, 37839), (1665, 12613)]