28251215

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{1301}}^1$

素因数の和:1450

約数の個数: 16

約数和(自身を含む): 35060256

約数和(自身を除く): 6809041

約数列:

[1, 5, 43, 101, 215, 505, 1301, 4343, 6505, 21715, 55943, 131401, 279715, 657005, 5650243, 28251215]

約数ペア:

[(1, 28251215), (5, 5650243), (43, 657005), (101, 279715), (215, 131401), (505, 55943), (1301, 21715), (4343, 6505)]