20850705

素因数分解:

$3^2\times 5^1\times {\mathrm{563}}^1\times {\mathrm{823}}^1$

素因数の和:1397

約数の個数: 24

約数和(自身を含む): 36249408

約数和(自身を除く): 15398703

約数列:

[1, 3, 5, 9, 15, 45, 563, 823, 1689, 2469, 2815, 4115, 5067, 7407, 8445, 12345, 25335, 37035, 463349, 1390047, 2316745, 4170141, 6950235, 20850705]

約数ペア:

[(1, 20850705), (3, 6950235), (5, 4170141), (9, 2316745), (15, 1390047), (45, 463349), (563, 37035), (823, 25335), (1689, 12345), (2469, 8445), (2815, 7407), (4115, 5067)]