18805280

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9041}}^1$

素因数の和:9069

約数の個数: 48

約数和(自身を含む): 47850264

約数和(自身を除く): 29044984

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9041, 18082, 36164, 45205, 72328, 90410, 117533, 144656, 180820, 235066, 289312, 361640, 470132, 587665, 723280, 940264, 1175330, 1446560, 1880528, 2350660, 3761056, 4701320, 9402640, 18805280]

約数ペア:

[(1, 18805280), (2, 9402640), (4, 4701320), (5, 3761056), (8, 2350660), (10, 1880528), (13, 1446560), (16, 1175330), (20, 940264), (26, 723280), (32, 587665), (40, 470132), (52, 361640), (65, 289312), (80, 235066), (104, 180820), (130, 144656), (160, 117533), (208, 90410), (260, 72328), (416, 45205), (520, 36164), (1040, 18082), (2080, 9041)]