18208100

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{4441}}^1$

素因数の和:4496

約数の個数: 36

約数和(自身を含む): 40484388

約数和(自身を除く): 22276288

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 4441, 8882, 17764, 22205, 44410, 88820, 111025, 182081, 222050, 364162, 444100, 728324, 910405, 1820810, 3641620, 4552025, 9104050, 18208100]

約数ペア:

[(1, 18208100), (2, 9104050), (4, 4552025), (5, 3641620), (10, 1820810), (20, 910405), (25, 728324), (41, 444100), (50, 364162), (82, 222050), (100, 182081), (164, 111025), (205, 88820), (410, 44410), (820, 22205), (1025, 17764), (2050, 8882), (4100, 4441)]