128821880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{292777}}^1$

素因数の和:292799

約数の個数: 32

約数和(自身を含む): 316200240

約数和(自身を除く): 187378360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 292777, 585554, 1171108, 1463885, 2342216, 2927770, 3220547, 5855540, 6441094, 11711080, 12882188, 16102735, 25764376, 32205470, 64410940, 128821880]

約数ペア:

[(1, 128821880), (2, 64410940), (4, 32205470), (5, 25764376), (8, 16102735), (10, 12882188), (11, 11711080), (20, 6441094), (22, 5855540), (40, 3220547), (44, 2927770), (55, 2342216), (88, 1463885), (110, 1171108), (220, 585554), (440, 292777)]