20061640

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1907}}^1$

素因数の和:2181

約数の個数: 32

約数和(自身を含む): 45334080

約数和(自身を除く): 25272440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 1907, 2104, 2630, 3814, 5260, 7628, 9535, 10520, 15256, 19070, 38140, 76280, 501541, 1003082, 2006164, 2507705, 4012328, 5015410, 10030820, 20061640]

約数ペア:

[(1, 20061640), (2, 10030820), (4, 5015410), (5, 4012328), (8, 2507705), (10, 2006164), (20, 1003082), (40, 501541), (263, 76280), (526, 38140), (1052, 19070), (1315, 15256), (1907, 10520), (2104, 9535), (2630, 7628), (3814, 5260)]