19381975

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:411

約数の個数: 24

約数和(自身を含む): 25176960

約数和(自身を除く): 5794985

約数列:

[1, 5, 25, 31, 89, 155, 281, 445, 775, 1405, 2225, 2759, 7025, 8711, 13795, 25009, 43555, 68975, 125045, 217775, 625225, 775279, 3876395, 19381975]

約数ペア:

[(1, 19381975), (5, 3876395), (25, 775279), (31, 625225), (89, 217775), (155, 125045), (281, 68975), (445, 43555), (775, 25009), (1405, 13795), (2225, 8711), (2759, 7025)]