21055778860

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{491}}^1\times {\mathrm{691}}^1$

素因数の和:1327

約数の個数: 96

約数和(自身を含む): 46330341120

約数和(自身を除く): 25274562260

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 107, 116, 145, 214, 290, 428, 491, 535, 580, 691, 982, 1070, 1382, 1964, 2140, 2455, 2764, 3103, 3455, 4910, 6206, 6910, 9820, 12412, 13820, 14239, 15515, 20039, 28478, 31030, 40078, 52537, 56956, 62060, 71195, 73937, 80156, 100195, 105074, 142390, 147874, 200390, 210148, 262685, 284780, 295748, 339281, 369685, 400780, 525370, 678562, 739370, 1050740, 1357124, 1478740, 1523573, 1696405, 2144173, 3047146, 3392810, 4288346, 6094292, 6785620, 7617865, 8576692, 9839149, 10720865, 15235730, 19678298, 21441730, 30471460, 36303067, 39356596, 42883460, 49195745, 72606134, 98391490, 145212268, 181515335, 196782980, 363030670, 726061340, 1052788943, 2105577886, 4211155772, 5263944715, 10527889430, 21055778860]

約数ペア:

[(1, 21055778860), (2, 10527889430), (4, 5263944715), (5, 4211155772), (10, 2105577886), (20, 1052788943), (29, 726061340), (58, 363030670), (107, 196782980), (116, 181515335), (145, 145212268), (214, 98391490), (290, 72606134), (428, 49195745), (491, 42883460), (535, 39356596), (580, 36303067), (691, 30471460), (982, 21441730), (1070, 19678298), (1382, 15235730), (1964, 10720865), (2140, 9839149), (2455, 8576692), (2764, 7617865), (3103, 6785620), (3455, 6094292), (4910, 4288346), (6206, 3392810), (6910, 3047146), (9820, 2144173), (12412, 1696405), (13820, 1523573), (14239, 1478740), (15515, 1357124), (20039, 1050740), (28478, 739370), (31030, 678562), (40078, 525370), (52537, 400780), (56956, 369685), (62060, 339281), (71195, 295748), (73937, 284780), (80156, 262685), (100195, 210148), (105074, 200390), (142390, 147874)]