18687888

素因数分解:

$2^4\times 3^3\times {\mathrm{181}}^1\times {\mathrm{239}}^1$

素因数の和:437

約数の個数: 80

約数和(自身を含む): 54163200

約数和(自身を除く): 35475312

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 144, 181, 216, 239, 362, 432, 478, 543, 717, 724, 956, 1086, 1434, 1448, 1629, 1912, 2151, 2172, 2868, 2896, 3258, 3824, 4302, 4344, 4887, 5736, 6453, 6516, 8604, 8688, 9774, 11472, 12906, 13032, 17208, 19548, 25812, 26064, 34416, 39096, 43259, 51624, 78192, 86518, 103248, 129777, 173036, 259554, 346072, 389331, 519108, 692144, 778662, 1038216, 1167993, 1557324, 2076432, 2335986, 3114648, 4671972, 6229296, 9343944, 18687888]

約数ペア:

[(1, 18687888), (2, 9343944), (3, 6229296), (4, 4671972), (6, 3114648), (8, 2335986), (9, 2076432), (12, 1557324), (16, 1167993), (18, 1038216), (24, 778662), (27, 692144), (36, 519108), (48, 389331), (54, 346072), (72, 259554), (108, 173036), (144, 129777), (181, 103248), (216, 86518), (239, 78192), (362, 51624), (432, 43259), (478, 39096), (543, 34416), (717, 26064), (724, 25812), (956, 19548), (1086, 17208), (1434, 13032), (1448, 12906), (1629, 11472), (1912, 9774), (2151, 8688), (2172, 8604), (2868, 6516), (2896, 6453), (3258, 5736), (3824, 4887), (4302, 4344)]