18578320

素因数分解:

$2^4\times 5^1\times {\mathrm{263}}^1\times {\mathrm{883}}^1$

素因数の和:1159

約数の個数: 40

約数和(自身を含む): 43407936

約数和(自身を除く): 24829616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 263, 526, 883, 1052, 1315, 1766, 2104, 2630, 3532, 4208, 4415, 5260, 7064, 8830, 10520, 14128, 17660, 21040, 35320, 70640, 232229, 464458, 928916, 1161145, 1857832, 2322290, 3715664, 4644580, 9289160, 18578320]

約数ペア:

[(1, 18578320), (2, 9289160), (4, 4644580), (5, 3715664), (8, 2322290), (10, 1857832), (16, 1161145), (20, 928916), (40, 464458), (80, 232229), (263, 70640), (526, 35320), (883, 21040), (1052, 17660), (1315, 14128), (1766, 10520), (2104, 8830), (2630, 7064), (3532, 5260), (4208, 4415)]