20402512

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2087}}^1$

素因数の和:2155

約数の個数: 40

約数和(自身を含む): 43497216

約数和(自身を除く): 23094704

約数列:

[1, 2, 4, 8, 13, 16, 26, 47, 52, 94, 104, 188, 208, 376, 611, 752, 1222, 2087, 2444, 4174, 4888, 8348, 9776, 16696, 27131, 33392, 54262, 98089, 108524, 196178, 217048, 392356, 434096, 784712, 1275157, 1569424, 2550314, 5100628, 10201256, 20402512]

約数ペア:

[(1, 20402512), (2, 10201256), (4, 5100628), (8, 2550314), (13, 1569424), (16, 1275157), (26, 784712), (47, 434096), (52, 392356), (94, 217048), (104, 196178), (188, 108524), (208, 98089), (376, 54262), (611, 33392), (752, 27131), (1222, 16696), (2087, 9776), (2444, 8348), (4174, 4888)]