18720052

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{2293}}^1$

素因数の和:2467

約数の個数: 24

約数和(自身を含む): 35520296

約数和(自身を除く): 16800244

約数列:

[1, 2, 4, 13, 26, 52, 157, 314, 628, 2041, 2293, 4082, 4586, 8164, 9172, 29809, 59618, 119236, 360001, 720002, 1440004, 4680013, 9360026, 18720052]

約数ペア:

[(1, 18720052), (2, 9360026), (4, 4680013), (13, 1440004), (26, 720002), (52, 360001), (157, 119236), (314, 59618), (628, 29809), (2041, 9172), (2293, 8164), (4082, 4586)]