19815575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{3209}}^1$

素因数の和:3251

約数の個数: 24

約数和(自身を含む): 27862800

約数和(自身を除く): 8047225

約数列:

[1, 5, 13, 19, 25, 65, 95, 247, 325, 475, 1235, 3209, 6175, 16045, 41717, 60971, 80225, 208585, 304855, 792623, 1042925, 1524275, 3963115, 19815575]

約数ペア:

[(1, 19815575), (5, 3963115), (13, 1524275), (19, 1042925), (25, 792623), (65, 304855), (95, 208585), (247, 80225), (325, 60971), (475, 41717), (1235, 16045), (3209, 6175)]