20051028

素因数分解:

$2^2\times 3^2\times {\mathrm{139}}^1\times {\mathrm{4007}}^1$

素因数の和:4156

約数の個数: 36

約数和(自身を含む): 51061920

約数和(自身を除く): 31010892

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 139, 278, 417, 556, 834, 1251, 1668, 2502, 4007, 5004, 8014, 12021, 16028, 24042, 36063, 48084, 72126, 144252, 556973, 1113946, 1670919, 2227892, 3341838, 5012757, 6683676, 10025514, 20051028]

約数ペア:

[(1, 20051028), (2, 10025514), (3, 6683676), (4, 5012757), (6, 3341838), (9, 2227892), (12, 1670919), (18, 1113946), (36, 556973), (139, 144252), (278, 72126), (417, 48084), (556, 36063), (834, 24042), (1251, 16028), (1668, 12021), (2502, 8014), (4007, 5004)]