123409880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{2777}}^1$

素因数の和:2900

約数の個数: 64

約数和(自身を含む): 306024480

約数和(自身を除く): 182614600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 101, 110, 202, 220, 404, 440, 505, 808, 1010, 1111, 2020, 2222, 2777, 4040, 4444, 5554, 5555, 8888, 11108, 11110, 13885, 22216, 22220, 27770, 30547, 44440, 55540, 61094, 111080, 122188, 152735, 244376, 280477, 305470, 560954, 610940, 1121908, 1221880, 1402385, 2243816, 2804770, 3085247, 5609540, 6170494, 11219080, 12340988, 15426235, 24681976, 30852470, 61704940, 123409880]

約数ペア:

[(1, 123409880), (2, 61704940), (4, 30852470), (5, 24681976), (8, 15426235), (10, 12340988), (11, 11219080), (20, 6170494), (22, 5609540), (40, 3085247), (44, 2804770), (55, 2243816), (88, 1402385), (101, 1221880), (110, 1121908), (202, 610940), (220, 560954), (404, 305470), (440, 280477), (505, 244376), (808, 152735), (1010, 122188), (1111, 111080), (2020, 61094), (2222, 55540), (2777, 44440), (4040, 30547), (4444, 27770), (5554, 22220), (5555, 22216), (8888, 13885), (11108, 11110)]