21732885

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{28409}}^1$

素因数の和:28437

約数の個数: 24

約数和(自身を含む): 39887640

約数和(自身を除く): 18154755

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 153, 255, 765, 28409, 85227, 142045, 255681, 426135, 482953, 1278405, 1448859, 2414765, 4346577, 7244295, 21732885]

約数ペア:

[(1, 21732885), (3, 7244295), (5, 4346577), (9, 2414765), (15, 1448859), (17, 1278405), (45, 482953), (51, 426135), (85, 255681), (153, 142045), (255, 85227), (765, 28409)]