18422120

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 43545600

約数和(自身を除く): 25123480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 47, 82, 94, 164, 188, 205, 235, 239, 328, 376, 410, 470, 478, 820, 940, 956, 1195, 1640, 1880, 1912, 1927, 2390, 3854, 4780, 7708, 9560, 9635, 9799, 11233, 15416, 19270, 19598, 22466, 38540, 39196, 44932, 48995, 56165, 77080, 78392, 89864, 97990, 112330, 195980, 224660, 391960, 449320, 460553, 921106, 1842212, 2302765, 3684424, 4605530, 9211060, 18422120]

約数ペア:

[(1, 18422120), (2, 9211060), (4, 4605530), (5, 3684424), (8, 2302765), (10, 1842212), (20, 921106), (40, 460553), (41, 449320), (47, 391960), (82, 224660), (94, 195980), (164, 112330), (188, 97990), (205, 89864), (235, 78392), (239, 77080), (328, 56165), (376, 48995), (410, 44932), (470, 39196), (478, 38540), (820, 22466), (940, 19598), (956, 19270), (1195, 15416), (1640, 11233), (1880, 9799), (1912, 9635), (1927, 9560), (2390, 7708), (3854, 4780)]