21938975

素因数分解:

$5^2\times {\mathrm{83}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:299

約数の個数: 24

約数和(自身を含む): 28071120

約数和(自身を除く): 6132145

約数列:

[1, 5, 25, 83, 97, 109, 415, 485, 545, 2075, 2425, 2725, 8051, 9047, 10573, 40255, 45235, 52865, 201275, 226175, 264325, 877559, 4387795, 21938975]

約数ペア:

[(1, 21938975), (5, 4387795), (25, 877559), (83, 264325), (97, 226175), (109, 201275), (415, 52865), (485, 45235), (545, 40255), (2075, 10573), (2425, 9047), (2725, 8051)]