20215571418

素因数分解:

$2^1\times 3^2\times 7^3\times {\mathrm{71}}^1\times {\mathrm{107}}^1\times {\mathrm{431}}^1$

素因数の和:638

約数の個数: 192

約数和(自身を含む): 52404019200

約数和(自身を除く): 32188447782

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 71, 98, 107, 126, 142, 147, 213, 214, 294, 321, 343, 426, 431, 441, 497, 639, 642, 686, 749, 862, 882, 963, 994, 1029, 1278, 1293, 1491, 1498, 1926, 2058, 2247, 2586, 2982, 3017, 3087, 3479, 3879, 4473, 4494, 5243, 6034, 6174, 6741, 6958, 7597, 7758, 8946, 9051, 10437, 10486, 13482, 15194, 15729, 18102, 20874, 21119, 22791, 24353, 27153, 30601, 31311, 31458, 36701, 42238, 45582, 46117, 47187, 48706, 53179, 54306, 61202, 62622, 63357, 68373, 73059, 73402, 91803, 92234, 94374, 106358, 110103, 126714, 136746, 138351, 146118, 147833, 159537, 183606, 190071, 214207, 219177, 220206, 275409, 276702, 295666, 319074, 322819, 330309, 372253, 380142, 415053, 428414, 438354, 443499, 478611, 550818, 642621, 645638, 660618, 744506, 830106, 886998, 957222, 968457, 1116759, 1285242, 1330497, 1499449, 1927863, 1936914, 2233518, 2259733, 2605771, 2660994, 2905371, 2998898, 3274307, 3350277, 3855726, 4498347, 4519466, 5211542, 5810742, 6548614, 6700554, 6779199, 7817313, 8996694, 9822921, 10496143, 13495041, 13558398, 15634626, 15818131, 19645842, 20337597, 20992286, 22920149, 23451939, 26990082, 29468763, 31488429, 31636262, 40675194, 45840298, 46903878, 47454393, 58937526, 62976858, 68760447, 94465287, 94908786, 137520894, 142363179, 160441043, 188930574, 206281341, 284726358, 320882086, 412562682, 481323129, 962646258, 1123087301, 1443969387, 2246174602, 2887938774, 3369261903, 6738523806, 10107785709, 20215571418]

約数ペア:

[(1, 20215571418), (2, 10107785709), (3, 6738523806), (6, 3369261903), (7, 2887938774), (9, 2246174602), (14, 1443969387), (18, 1123087301), (21, 962646258), (42, 481323129), (49, 412562682), (63, 320882086), (71, 284726358), (98, 206281341), (107, 188930574), (126, 160441043), (142, 142363179), (147, 137520894), (213, 94908786), (214, 94465287), (294, 68760447), (321, 62976858), (343, 58937526), (426, 47454393), (431, 46903878), (441, 45840298), (497, 40675194), (639, 31636262), (642, 31488429), (686, 29468763), (749, 26990082), (862, 23451939), (882, 22920149), (963, 20992286), (994, 20337597), (1029, 19645842), (1278, 15818131), (1293, 15634626), (1491, 13558398), (1498, 13495041), (1926, 10496143), (2058, 9822921), (2247, 8996694), (2586, 7817313), (2982, 6779199), (3017, 6700554), (3087, 6548614), (3479, 5810742), (3879, 5211542), (4473, 4519466), (4494, 4498347), (5243, 3855726), (6034, 3350277), (6174, 3274307), (6741, 2998898), (6958, 2905371), (7597, 2660994), (7758, 2605771), (8946, 2259733), (9051, 2233518), (10437, 1936914), (10486, 1927863), (13482, 1499449), (15194, 1330497), (15729, 1285242), (18102, 1116759), (20874, 968457), (21119, 957222), (22791, 886998), (24353, 830106), (27153, 744506), (30601, 660618), (31311, 645638), (31458, 642621), (36701, 550818), (42238, 478611), (45582, 443499), (46117, 438354), (47187, 428414), (48706, 415053), (53179, 380142), (54306, 372253), (61202, 330309), (62622, 322819), (63357, 319074), (68373, 295666), (73059, 276702), (73402, 275409), (91803, 220206), (92234, 219177), (94374, 214207), (106358, 190071), (110103, 183606), (126714, 159537), (136746, 147833), (138351, 146118)]