21388034

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{281}}^1\times {\mathrm{2003}}^1$

素因数の和:2305

約数の個数: 16

約数和(自身を含む): 33907680

約数和(自身を除く): 12519646

約数列:

[1, 2, 19, 38, 281, 562, 2003, 4006, 5339, 10678, 38057, 76114, 562843, 1125686, 10694017, 21388034]

約数ペア:

[(1, 21388034), (2, 10694017), (19, 1125686), (38, 562843), (281, 76114), (562, 38057), (2003, 10678), (4006, 5339)]