18974695

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1\times {\mathrm{491}}^1$

素因数の和:686

約数の個数: 16

約数和(自身を含む): 23379840

約数和(自身を除く): 4405145

約数列:

[1, 5, 59, 131, 295, 491, 655, 2455, 7729, 28969, 38645, 64321, 144845, 321605, 3794939, 18974695]

約数ペア:

[(1, 18974695), (5, 3794939), (59, 321605), (131, 144845), (295, 64321), (491, 38645), (655, 28969), (2455, 7729)]