20879995

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{4027}}^1$

素因数の和:4110

約数の個数: 16

約数和(自身を含む): 26971488

約数和(自身を除く): 6091493

約数列:

[1, 5, 17, 61, 85, 305, 1037, 4027, 5185, 20135, 68459, 245647, 342295, 1228235, 4175999, 20879995]

約数ペア:

[(1, 20879995), (5, 4175999), (17, 1228235), (61, 342295), (85, 245647), (305, 68459), (1037, 20135), (4027, 5185)]