21597712

素因数分解:

$2^4\times {\mathrm{53}}^1\times {\mathrm{25469}}^1$

素因数の和:25530

約数の個数: 20

約数和(自身を含む): 42636780

約数和(自身を除く): 21039068

約数列:

[1, 2, 4, 8, 16, 53, 106, 212, 424, 848, 25469, 50938, 101876, 203752, 407504, 1349857, 2699714, 5399428, 10798856, 21597712]

約数ペア:

[(1, 21597712), (2, 10798856), (4, 5399428), (8, 2699714), (16, 1349857), (53, 407504), (106, 203752), (212, 101876), (424, 50938), (848, 25469)]