20708478

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{53}}^1\times {\mathrm{443}}^1$

素因数の和:518

約数の個数: 72

約数和(自身を含む): 53298648

約数和(自身を除く): 32590170

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 53, 63, 98, 106, 126, 147, 159, 294, 318, 371, 441, 443, 477, 742, 882, 886, 954, 1113, 1329, 2226, 2597, 2658, 3101, 3339, 3987, 5194, 6202, 6678, 7791, 7974, 9303, 15582, 18606, 21707, 23373, 23479, 27909, 43414, 46746, 46958, 55818, 65121, 70437, 130242, 140874, 164353, 195363, 211311, 328706, 390726, 422622, 493059, 986118, 1150471, 1479177, 2300942, 2958354, 3451413, 6902826, 10354239, 20708478]

約数ペア:

[(1, 20708478), (2, 10354239), (3, 6902826), (6, 3451413), (7, 2958354), (9, 2300942), (14, 1479177), (18, 1150471), (21, 986118), (42, 493059), (49, 422622), (53, 390726), (63, 328706), (98, 211311), (106, 195363), (126, 164353), (147, 140874), (159, 130242), (294, 70437), (318, 65121), (371, 55818), (441, 46958), (443, 46746), (477, 43414), (742, 27909), (882, 23479), (886, 23373), (954, 21707), (1113, 18606), (1329, 15582), (2226, 9303), (2597, 7974), (2658, 7791), (3101, 6678), (3339, 6202), (3987, 5194)]