20972574

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{113}}^1\times {\mathrm{491}}^1$

素因数の和:622

約数の個数: 64

約数和(自身を含む): 53844480

約数和(自身を除く): 32871906

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 113, 126, 189, 226, 339, 378, 491, 678, 791, 982, 1017, 1473, 1582, 2034, 2373, 2946, 3051, 3437, 4419, 4746, 6102, 6874, 7119, 8838, 10311, 13257, 14238, 20622, 21357, 26514, 30933, 42714, 55483, 61866, 92799, 110966, 166449, 185598, 332898, 388381, 499347, 776762, 998694, 1165143, 1498041, 2330286, 2996082, 3495429, 6990858, 10486287, 20972574]

約数ペア:

[(1, 20972574), (2, 10486287), (3, 6990858), (6, 3495429), (7, 2996082), (9, 2330286), (14, 1498041), (18, 1165143), (21, 998694), (27, 776762), (42, 499347), (54, 388381), (63, 332898), (113, 185598), (126, 166449), (189, 110966), (226, 92799), (339, 61866), (378, 55483), (491, 42714), (678, 30933), (791, 26514), (982, 21357), (1017, 20622), (1473, 14238), (1582, 13257), (2034, 10311), (2373, 8838), (2946, 7119), (3051, 6874), (3437, 6102), (4419, 4746)]