20915505

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{35753}}^1$

素因数の和:35777

約数の個数: 24

約数和(自身を含む): 39043368

約数和(自身を除く): 18127863

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 35753, 107259, 178765, 321777, 464789, 536295, 1394367, 1608885, 2323945, 4183101, 6971835, 20915505]

約数ペア:

[(1, 20915505), (3, 6971835), (5, 4183101), (9, 2323945), (13, 1608885), (15, 1394367), (39, 536295), (45, 464789), (65, 321777), (117, 178765), (195, 107259), (585, 35753)]