18628720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21169}}^1$

素因数の和:21193

約数の個数: 40

約数和(自身を含む): 47251440

約数和(自身を除く): 28622720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 21169, 42338, 84676, 105845, 169352, 211690, 232859, 338704, 423380, 465718, 846760, 931436, 1164295, 1693520, 1862872, 2328590, 3725744, 4657180, 9314360, 18628720]

約数ペア:

[(1, 18628720), (2, 9314360), (4, 4657180), (5, 3725744), (8, 2328590), (10, 1862872), (11, 1693520), (16, 1164295), (20, 931436), (22, 846760), (40, 465718), (44, 423380), (55, 338704), (80, 232859), (88, 211690), (110, 169352), (176, 105845), (220, 84676), (440, 42338), (880, 21169)]