21334864

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{78437}}^1$

素因数の和:78462

約数の個数: 20

約数和(自身を含む): 43768404

約数和(自身を除く): 22433540

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 78437, 156874, 313748, 627496, 1254992, 1333429, 2666858, 5333716, 10667432, 21334864]

約数ペア:

[(1, 21334864), (2, 10667432), (4, 5333716), (8, 2666858), (16, 1333429), (17, 1254992), (34, 627496), (68, 313748), (136, 156874), (272, 78437)]