21945880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{49877}}^1$

素因数の和:49899

約数の個数: 32

約数和(自身を含む): 53868240

約数和(自身を除く): 31922360

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 49877, 99754, 199508, 249385, 399016, 498770, 548647, 997540, 1097294, 1995080, 2194588, 2743235, 4389176, 5486470, 10972940, 21945880]

約数ペア:

[(1, 21945880), (2, 10972940), (4, 5486470), (5, 4389176), (8, 2743235), (10, 2194588), (11, 1995080), (20, 1097294), (22, 997540), (40, 548647), (44, 498770), (55, 399016), (88, 249385), (110, 199508), (220, 99754), (440, 49877)]