21068144

素因数分解:

$2^4\times {\mathrm{157}}^1\times {\mathrm{8387}}^1$

素因数の和:8552

約数の個数: 20

約数和(自身を含む): 41084424

約数和(自身を除く): 20016280

約数列:

[1, 2, 4, 8, 16, 157, 314, 628, 1256, 2512, 8387, 16774, 33548, 67096, 134192, 1316759, 2633518, 5267036, 10534072, 21068144]

約数ペア:

[(1, 21068144), (2, 10534072), (4, 5267036), (8, 2633518), (16, 1316759), (157, 134192), (314, 67096), (628, 33548), (1256, 16774), (2512, 8387)]