12900140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{307}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 29804544

約数和(自身を除く): 16904404

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 191, 220, 307, 382, 614, 764, 955, 1228, 1535, 1910, 2101, 3070, 3377, 3820, 4202, 6140, 6754, 8404, 10505, 13508, 16885, 21010, 33770, 42020, 58637, 67540, 117274, 234548, 293185, 586370, 645007, 1172740, 1290014, 2580028, 3225035, 6450070, 12900140]

約数ペア:

[(1, 12900140), (2, 6450070), (4, 3225035), (5, 2580028), (10, 1290014), (11, 1172740), (20, 645007), (22, 586370), (44, 293185), (55, 234548), (110, 117274), (191, 67540), (220, 58637), (307, 42020), (382, 33770), (614, 21010), (764, 16885), (955, 13508), (1228, 10505), (1535, 8404), (1910, 6754), (2101, 6140), (3070, 4202), (3377, 3820)]