21720010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{167077}}^1$

素因数の和:167097

約数の個数: 16

約数和(自身を含む): 42103656

約数和(自身を除く): 20383646

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 167077, 334154, 835385, 1670770, 2172001, 4344002, 10860005, 21720010]

約数ペア:

[(1, 21720010), (2, 10860005), (5, 4344002), (10, 2172001), (13, 1670770), (26, 835385), (65, 334154), (130, 167077)]