18909040

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^2\times {\mathrm{107}}^1$

素因数の和:214

約数の個数: 60

約数和(自身を含む): 45338616

約数和(自身を除く): 26429576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 107, 188, 214, 235, 376, 428, 470, 535, 752, 856, 940, 1070, 1712, 1880, 2140, 2209, 3760, 4280, 4418, 5029, 8560, 8836, 10058, 11045, 17672, 20116, 22090, 25145, 35344, 40232, 44180, 50290, 80464, 88360, 100580, 176720, 201160, 236363, 402320, 472726, 945452, 1181815, 1890904, 2363630, 3781808, 4727260, 9454520, 18909040]

約数ペア:

[(1, 18909040), (2, 9454520), (4, 4727260), (5, 3781808), (8, 2363630), (10, 1890904), (16, 1181815), (20, 945452), (40, 472726), (47, 402320), (80, 236363), (94, 201160), (107, 176720), (188, 100580), (214, 88360), (235, 80464), (376, 50290), (428, 44180), (470, 40232), (535, 35344), (752, 25145), (856, 22090), (940, 20116), (1070, 17672), (1712, 11045), (1880, 10058), (2140, 8836), (2209, 8560), (3760, 5029), (4280, 4418)]