18113800

素因数分解:

$2^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{47}}^2$

素因数の和:151

約数の個数: 72

約数和(自身を含む): 44079210

約数和(自身を除く): 25965410

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 47, 50, 82, 94, 100, 164, 188, 200, 205, 235, 328, 376, 410, 470, 820, 940, 1025, 1175, 1640, 1880, 1927, 2050, 2209, 2350, 3854, 4100, 4418, 4700, 7708, 8200, 8836, 9400, 9635, 11045, 15416, 17672, 19270, 22090, 38540, 44180, 48175, 55225, 77080, 88360, 90569, 96350, 110450, 181138, 192700, 220900, 362276, 385400, 441800, 452845, 724552, 905690, 1811380, 2264225, 3622760, 4528450, 9056900, 18113800]

約数ペア:

[(1, 18113800), (2, 9056900), (4, 4528450), (5, 3622760), (8, 2264225), (10, 1811380), (20, 905690), (25, 724552), (40, 452845), (41, 441800), (47, 385400), (50, 362276), (82, 220900), (94, 192700), (100, 181138), (164, 110450), (188, 96350), (200, 90569), (205, 88360), (235, 77080), (328, 55225), (376, 48175), (410, 44180), (470, 38540), (820, 22090), (940, 19270), (1025, 17672), (1175, 15416), (1640, 11045), (1880, 9635), (1927, 9400), (2050, 8836), (2209, 8200), (2350, 7708), (3854, 4700), (4100, 4418)]