21220038

素因数分解:

$2^1\times 3^2\times 7^4\times {\mathrm{491}}^1$

素因数の和:527

約数の個数: 60

約数和(自身を含む): 53745588

約数和(自身を除く): 32525550

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 98, 126, 147, 294, 343, 441, 491, 686, 882, 982, 1029, 1473, 2058, 2401, 2946, 3087, 3437, 4419, 4802, 6174, 6874, 7203, 8838, 10311, 14406, 20622, 21609, 24059, 30933, 43218, 48118, 61866, 72177, 144354, 168413, 216531, 336826, 433062, 505239, 1010478, 1178891, 1515717, 2357782, 3031434, 3536673, 7073346, 10610019, 21220038]

約数ペア:

[(1, 21220038), (2, 10610019), (3, 7073346), (6, 3536673), (7, 3031434), (9, 2357782), (14, 1515717), (18, 1178891), (21, 1010478), (42, 505239), (49, 433062), (63, 336826), (98, 216531), (126, 168413), (147, 144354), (294, 72177), (343, 61866), (441, 48118), (491, 43218), (686, 30933), (882, 24059), (982, 21609), (1029, 20622), (1473, 14406), (2058, 10311), (2401, 8838), (2946, 7203), (3087, 6874), (3437, 6174), (4419, 4802)]