18946640

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5039}}^1$

素因数の和:5099

約数の個数: 40

約数和(自身を含む): 44997120

約数和(自身を除く): 26050480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5039, 10078, 20156, 25195, 40312, 50390, 80624, 100780, 201560, 236833, 403120, 473666, 947332, 1184165, 1894664, 2368330, 3789328, 4736660, 9473320, 18946640]

約数ペア:

[(1, 18946640), (2, 9473320), (4, 4736660), (5, 3789328), (8, 2368330), (10, 1894664), (16, 1184165), (20, 947332), (40, 473666), (47, 403120), (80, 236833), (94, 201560), (188, 100780), (235, 80624), (376, 50390), (470, 40312), (752, 25195), (940, 20156), (1880, 10078), (3760, 5039)]