19964725

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{3821}}^1$

素因数の和:3861

約数の個数: 24

約数和(自身を含む): 28435680

約数和(自身を除く): 8470955

約数列:

[1, 5, 11, 19, 25, 55, 95, 209, 275, 475, 1045, 3821, 5225, 19105, 42031, 72599, 95525, 210155, 362995, 798589, 1050775, 1814975, 3992945, 19964725]

約数ペア:

[(1, 19964725), (5, 3992945), (11, 1814975), (19, 1050775), (25, 798589), (55, 362995), (95, 210155), (209, 95525), (275, 72599), (475, 42031), (1045, 19105), (3821, 5225)]