21702280

素因数分解:

$2^3\times 5^1\times {\mathrm{542557}}^1$

素因数の和:542568

約数の個数: 16

約数和(自身を含む): 48830220

約数和(自身を除く): 27127940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 542557, 1085114, 2170228, 2712785, 4340456, 5425570, 10851140, 21702280]

約数ペア:

[(1, 21702280), (2, 10851140), (4, 5425570), (5, 4340456), (8, 2712785), (10, 2170228), (20, 1085114), (40, 542557)]