19940360

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{45319}}^1$

素因数の和:45341

約数の個数: 32

約数和(自身を含む): 48945600

約数和(自身を除く): 29005240

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 45319, 90638, 181276, 226595, 362552, 453190, 498509, 906380, 997018, 1812760, 1994036, 2492545, 3988072, 4985090, 9970180, 19940360]

約数ペア:

[(1, 19940360), (2, 9970180), (4, 4985090), (5, 3988072), (8, 2492545), (10, 1994036), (11, 1812760), (20, 997018), (22, 906380), (40, 498509), (44, 453190), (55, 362552), (88, 226595), (110, 181276), (220, 90638), (440, 45319)]