21309976

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{156691}}^1$

素因数の和:156714

約数の個数: 16

約数和(自身を含む): 42306840

約数和(自身を除く): 20996864

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 156691, 313382, 626764, 1253528, 2663747, 5327494, 10654988, 21309976]

約数ペア:

[(1, 21309976), (2, 10654988), (4, 5327494), (8, 2663747), (17, 1253528), (34, 626764), (68, 313382), (136, 156691)]