28487205

素因数分解:

$3^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{1997}}^1$

素因数の和:2325

約数の個数: 24

約数和(自身を含む): 49558392

約数和(自身を除く): 21071187

約数列:

[1, 3, 5, 9, 15, 45, 317, 951, 1585, 1997, 2853, 4755, 5991, 9985, 14265, 17973, 29955, 89865, 633049, 1899147, 3165245, 5697441, 9495735, 28487205]

約数ペア:

[(1, 28487205), (3, 9495735), (5, 5697441), (9, 3165245), (15, 1899147), (45, 633049), (317, 89865), (951, 29955), (1585, 17973), (1997, 14265), (2853, 9985), (4755, 5991)]