20891912

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{6679}}^1$

素因数の和:6725

約数の個数: 32

約数和(自身を含む): 43286400

約数和(自身を除く): 22394488

約数列:

[1, 2, 4, 8, 17, 23, 34, 46, 68, 92, 136, 184, 391, 782, 1564, 3128, 6679, 13358, 26716, 53432, 113543, 153617, 227086, 307234, 454172, 614468, 908344, 1228936, 2611489, 5222978, 10445956, 20891912]

約数ペア:

[(1, 20891912), (2, 10445956), (4, 5222978), (8, 2611489), (17, 1228936), (23, 908344), (34, 614468), (46, 454172), (68, 307234), (92, 227086), (136, 153617), (184, 113543), (391, 53432), (782, 26716), (1564, 13358), (3128, 6679)]