20931084

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{431}}^1$

素因数の和:531

約数の個数: 72

約数和(自身を含む): 56609280

約数和(自身を除く): 35678196

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 71, 76, 114, 142, 171, 213, 228, 284, 342, 426, 431, 639, 684, 852, 862, 1278, 1293, 1349, 1724, 2556, 2586, 2698, 3879, 4047, 5172, 5396, 7758, 8094, 8189, 12141, 15516, 16188, 16378, 24282, 24567, 30601, 32756, 48564, 49134, 61202, 73701, 91803, 98268, 122404, 147402, 183606, 275409, 294804, 367212, 550818, 581419, 1101636, 1162838, 1744257, 2325676, 3488514, 5232771, 6977028, 10465542, 20931084]

約数ペア:

[(1, 20931084), (2, 10465542), (3, 6977028), (4, 5232771), (6, 3488514), (9, 2325676), (12, 1744257), (18, 1162838), (19, 1101636), (36, 581419), (38, 550818), (57, 367212), (71, 294804), (76, 275409), (114, 183606), (142, 147402), (171, 122404), (213, 98268), (228, 91803), (284, 73701), (342, 61202), (426, 49134), (431, 48564), (639, 32756), (684, 30601), (852, 24567), (862, 24282), (1278, 16378), (1293, 16188), (1349, 15516), (1724, 12141), (2556, 8189), (2586, 8094), (2698, 7758), (3879, 5396), (4047, 5172)]