19639945

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{5701}}^1$

素因数の和:5772

約数の個数: 16

約数和(自身を含む): 25864272

約数和(自身を除く): 6224327

約数列:

[1, 5, 13, 53, 65, 265, 689, 3445, 5701, 28505, 74113, 302153, 370565, 1510765, 3927989, 19639945]

約数ペア:

[(1, 19639945), (5, 3927989), (13, 1510765), (53, 370565), (65, 302153), (265, 74113), (689, 28505), (3445, 5701)]