1999647760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{11897}}^1$

素因数の和:12112

約数の個数: 80

約数和(自身を含む): 5098816512

約数和(自身を除く): 3099168752

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 191, 220, 382, 440, 764, 880, 955, 1528, 1910, 2101, 3056, 3820, 4202, 7640, 8404, 10505, 11897, 15280, 16808, 21010, 23794, 33616, 42020, 47588, 59485, 84040, 95176, 118970, 130867, 168080, 190352, 237940, 261734, 475880, 523468, 654335, 951760, 1046936, 1308670, 2093872, 2272327, 2617340, 4544654, 5234680, 9089308, 10469360, 11361635, 18178616, 22723270, 24995597, 36357232, 45446540, 49991194, 90893080, 99982388, 124977985, 181786160, 199964776, 249955970, 399929552, 499911940, 999823880, 1999647760]

約数ペア:

[(1, 1999647760), (2, 999823880), (4, 499911940), (5, 399929552), (8, 249955970), (10, 199964776), (11, 181786160), (16, 124977985), (20, 99982388), (22, 90893080), (40, 49991194), (44, 45446540), (55, 36357232), (80, 24995597), (88, 22723270), (110, 18178616), (176, 11361635), (191, 10469360), (220, 9089308), (382, 5234680), (440, 4544654), (764, 2617340), (880, 2272327), (955, 2093872), (1528, 1308670), (1910, 1046936), (2101, 951760), (3056, 654335), (3820, 523468), (4202, 475880), (7640, 261734), (8404, 237940), (10505, 190352), (11897, 168080), (15280, 130867), (16808, 118970), (21010, 95176), (23794, 84040), (33616, 59485), (42020, 47588)]