19889675

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3221}}^1$

素因数の和:3263

約数の個数: 24

約数和(自身を含む): 27966960

約数和(自身を除く): 8077285

約数列:

[1, 5, 13, 19, 25, 65, 95, 247, 325, 475, 1235, 3221, 6175, 16105, 41873, 61199, 80525, 209365, 305995, 795587, 1046825, 1529975, 3977935, 19889675]

約数ペア:

[(1, 19889675), (5, 3977935), (13, 1529975), (19, 1046825), (25, 795587), (65, 305995), (95, 209365), (247, 80525), (325, 61199), (475, 41873), (1235, 16105), (3221, 6175)]