21052855

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{167}}^1\times {\mathrm{1327}}^1$

素因数の和:1518

約数の個数: 16

約数和(自身を含む): 26772480

約数和(自身を除く): 5719625

約数列:

[1, 5, 19, 95, 167, 835, 1327, 3173, 6635, 15865, 25213, 126065, 221609, 1108045, 4210571, 21052855]

約数ペア:

[(1, 21052855), (5, 4210571), (19, 1108045), (95, 221609), (167, 126065), (835, 25213), (1327, 15865), (3173, 6635)]