20193968

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{8039}}^1$

素因数の和:8204

約数の個数: 20

約数和(自身を含む): 39379920

約数和(自身を除く): 19185952

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 8039, 16078, 32156, 64312, 128624, 1262123, 2524246, 5048492, 10096984, 20193968]

約数ペア:

[(1, 20193968), (2, 10096984), (4, 5048492), (8, 2524246), (16, 1262123), (157, 128624), (314, 64312), (628, 32156), (1256, 16078), (2512, 8039)]