18918928

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{5449}}^1$

素因数の和:5495

約数の個数: 40

約数和(自身を含む): 43251200

約数和(自身を除く): 24332272

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 56, 62, 112, 124, 217, 248, 434, 496, 868, 1736, 3472, 5449, 10898, 21796, 38143, 43592, 76286, 87184, 152572, 168919, 305144, 337838, 610288, 675676, 1182433, 1351352, 2364866, 2702704, 4729732, 9459464, 18918928]

約数ペア:

[(1, 18918928), (2, 9459464), (4, 4729732), (7, 2702704), (8, 2364866), (14, 1351352), (16, 1182433), (28, 675676), (31, 610288), (56, 337838), (62, 305144), (112, 168919), (124, 152572), (217, 87184), (248, 76286), (434, 43592), (496, 38143), (868, 21796), (1736, 10898), (3472, 5449)]