20281008

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{541}}^1$

素因数の和:634

約数の個数: 80

約数和(自身を含む): 58067712

約数和(自身を除く): 37786704

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 66, 71, 88, 132, 142, 176, 213, 264, 284, 426, 528, 541, 568, 781, 852, 1082, 1136, 1562, 1623, 1704, 2164, 2343, 3124, 3246, 3408, 4328, 4686, 5951, 6248, 6492, 8656, 9372, 11902, 12496, 12984, 17853, 18744, 23804, 25968, 35706, 37488, 38411, 47608, 71412, 76822, 95216, 115233, 142824, 153644, 230466, 285648, 307288, 422521, 460932, 614576, 845042, 921864, 1267563, 1690084, 1843728, 2535126, 3380168, 5070252, 6760336, 10140504, 20281008]

約数ペア:

[(1, 20281008), (2, 10140504), (3, 6760336), (4, 5070252), (6, 3380168), (8, 2535126), (11, 1843728), (12, 1690084), (16, 1267563), (22, 921864), (24, 845042), (33, 614576), (44, 460932), (48, 422521), (66, 307288), (71, 285648), (88, 230466), (132, 153644), (142, 142824), (176, 115233), (213, 95216), (264, 76822), (284, 71412), (426, 47608), (528, 38411), (541, 37488), (568, 35706), (781, 25968), (852, 23804), (1082, 18744), (1136, 17853), (1562, 12984), (1623, 12496), (1704, 11902), (2164, 9372), (2343, 8656), (3124, 6492), (3246, 6248), (3408, 5951), (4328, 4686)]