891220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{4051}}^1$

素因数の和:4071

約数の個数: 24

約数和(自身を含む): 2042208

約数和(自身を除く): 1150988

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 4051, 8102, 16204, 20255, 40510, 44561, 81020, 89122, 178244, 222805, 445610, 891220]

約数ペア:

[(1, 891220), (2, 445610), (4, 222805), (5, 178244), (10, 89122), (11, 81020), (20, 44561), (22, 40510), (44, 20255), (55, 16204), (110, 8102), (220, 4051)]