20789118

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1187}}^1$

素因数の和:1341

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 31102722

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 139, 278, 417, 834, 973, 1187, 1251, 1946, 2374, 2502, 2919, 3561, 5838, 7122, 8309, 8757, 10683, 16618, 17514, 21366, 24927, 49854, 74781, 149562, 164993, 329986, 494979, 989958, 1154951, 1484937, 2309902, 2969874, 3464853, 6929706, 10394559, 20789118]

約数ペア:

[(1, 20789118), (2, 10394559), (3, 6929706), (6, 3464853), (7, 2969874), (9, 2309902), (14, 1484937), (18, 1154951), (21, 989958), (42, 494979), (63, 329986), (126, 164993), (139, 149562), (278, 74781), (417, 49854), (834, 24927), (973, 21366), (1187, 17514), (1251, 16618), (1946, 10683), (2374, 8757), (2502, 8309), (2919, 7122), (3561, 5838)]