1221880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2777}}^1$

素因数の和:2799

約数の個数: 32

約数和(自身を含む): 3000240

約数和(自身を除く): 1778360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 2777, 5554, 11108, 13885, 22216, 27770, 30547, 55540, 61094, 111080, 122188, 152735, 244376, 305470, 610940, 1221880]

約数ペア:

[(1, 1221880), (2, 610940), (4, 305470), (5, 244376), (8, 152735), (10, 122188), (11, 111080), (20, 61094), (22, 55540), (40, 30547), (44, 27770), (55, 22216), (88, 13885), (110, 11108), (220, 5554), (440, 2777)]