21486064

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{9661}}^1$

素因数の和:9808

約数の個数: 20

約数和(自身を含む): 41933080

約数和(自身を除く): 20447016

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 9661, 19322, 38644, 77288, 154576, 1342879, 2685758, 5371516, 10743032, 21486064]

約数ペア:

[(1, 21486064), (2, 10743032), (4, 5371516), (8, 2685758), (16, 1342879), (139, 154576), (278, 77288), (556, 38644), (1112, 19322), (2224, 9661)]