20668755

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{167}}^1\times {\mathrm{223}}^1$

素因数の和:435

約数の個数: 32

約数和(自身を含む): 34320384

約数和(自身を除く): 13651629

約数列:

[1, 3, 5, 15, 37, 111, 167, 185, 223, 501, 555, 669, 835, 1115, 2505, 3345, 6179, 8251, 18537, 24753, 30895, 37241, 41255, 92685, 111723, 123765, 186205, 558615, 1377917, 4133751, 6889585, 20668755]

約数ペア:

[(1, 20668755), (3, 6889585), (5, 4133751), (15, 1377917), (37, 558615), (111, 186205), (167, 123765), (185, 111723), (223, 92685), (501, 41255), (555, 37241), (669, 30895), (835, 24753), (1115, 18537), (2505, 8251), (3345, 6179)]