20128968

素因数分解:

$2^3\times 3^2\times {\mathrm{263}}^1\times {\mathrm{1063}}^1$

素因数の和:1338

約数の個数: 48

約数和(自身を含む): 54774720

約数和(自身を除く): 34645752

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 263, 526, 789, 1052, 1063, 1578, 2104, 2126, 2367, 3156, 3189, 4252, 4734, 6312, 6378, 8504, 9468, 9567, 12756, 18936, 19134, 25512, 38268, 76536, 279569, 559138, 838707, 1118276, 1677414, 2236552, 2516121, 3354828, 5032242, 6709656, 10064484, 20128968]

約数ペア:

[(1, 20128968), (2, 10064484), (3, 6709656), (4, 5032242), (6, 3354828), (8, 2516121), (9, 2236552), (12, 1677414), (18, 1118276), (24, 838707), (36, 559138), (72, 279569), (263, 76536), (526, 38268), (789, 25512), (1052, 19134), (1063, 18936), (1578, 12756), (2104, 9567), (2126, 9468), (2367, 8504), (3156, 6378), (3189, 6312), (4252, 4734)]