18640805

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1\times {\mathrm{821}}^1$

素因数の和:1084

約数の個数: 16

約数和(自身を含む): 23673600

約数和(自身を除く): 5032795

約数列:

[1, 5, 19, 95, 239, 821, 1195, 4105, 4541, 15599, 22705, 77995, 196219, 981095, 3728161, 18640805]

約数ペア:

[(1, 18640805), (5, 3728161), (19, 981095), (95, 196219), (239, 77995), (821, 22705), (1195, 15599), (4105, 4541)]