21919869

素因数分解:

$3^3\times {\mathrm{157}}^1\times {\mathrm{5171}}^1$

素因数の和:5337

約数の個数: 16

約数和(自身を含む): 32687040

約数和(自身を除く): 10767171

約数列:

[1, 3, 9, 27, 157, 471, 1413, 4239, 5171, 15513, 46539, 139617, 811847, 2435541, 7306623, 21919869]

約数ペア:

[(1, 21919869), (3, 7306623), (9, 2435541), (27, 811847), (157, 139617), (471, 46539), (1413, 15513), (4239, 5171)]