199980985

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{51343}}^1$

素因数の和:51408

約数の個数: 16

約数和(自身を含む): 258773760

約数和(自身を除く): 58792775

約数列:

[1, 5, 19, 41, 95, 205, 779, 3895, 51343, 256715, 975517, 2105063, 4877585, 10525315, 39996197, 199980985]

約数ペア:

[(1, 199980985), (5, 39996197), (19, 10525315), (41, 4877585), (95, 2105063), (205, 975517), (779, 256715), (3895, 51343)]