20657745

素因数分解:

$3^2\times 5^1\times {\mathrm{467}}^1\times {\mathrm{983}}^1$

素因数の和:1461

約数の個数: 24

約数和(自身を含む): 35919936

約数和(自身を除く): 15262191

約数列:

[1, 3, 5, 9, 15, 45, 467, 983, 1401, 2335, 2949, 4203, 4915, 7005, 8847, 14745, 21015, 44235, 459061, 1377183, 2295305, 4131549, 6885915, 20657745]

約数ペア:

[(1, 20657745), (3, 6885915), (5, 4131549), (9, 2295305), (15, 1377183), (45, 459061), (467, 44235), (983, 21015), (1401, 14745), (2335, 8847), (2949, 7005), (4203, 4915)]