21943220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2281}}^1$

素因数の和:2340

約数の個数: 48

約数和(自身を含む): 50989008

約数和(自身を除く): 29045788

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 37, 52, 65, 74, 130, 148, 185, 260, 370, 481, 740, 962, 1924, 2281, 2405, 4562, 4810, 9124, 9620, 11405, 22810, 29653, 45620, 59306, 84397, 118612, 148265, 168794, 296530, 337588, 421985, 593060, 843970, 1097161, 1687940, 2194322, 4388644, 5485805, 10971610, 21943220]

約数ペア:

[(1, 21943220), (2, 10971610), (4, 5485805), (5, 4388644), (10, 2194322), (13, 1687940), (20, 1097161), (26, 843970), (37, 593060), (52, 421985), (65, 337588), (74, 296530), (130, 168794), (148, 148265), (185, 118612), (260, 84397), (370, 59306), (481, 45620), (740, 29653), (962, 22810), (1924, 11405), (2281, 9620), (2405, 9124), (4562, 4810)]