19724500

素因数分解:

$2^2\times 5^3\times {\mathrm{103}}^1\times {\mathrm{383}}^1$

素因数の和:505

約数の個数: 48

約数和(自身を含む): 43610112

約数和(自身を除く): 23885612

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 103, 125, 206, 250, 383, 412, 500, 515, 766, 1030, 1532, 1915, 2060, 2575, 3830, 5150, 7660, 9575, 10300, 12875, 19150, 25750, 38300, 39449, 47875, 51500, 78898, 95750, 157796, 191500, 197245, 394490, 788980, 986225, 1972450, 3944900, 4931125, 9862250, 19724500]

約数ペア:

[(1, 19724500), (2, 9862250), (4, 4931125), (5, 3944900), (10, 1972450), (20, 986225), (25, 788980), (50, 394490), (100, 197245), (103, 191500), (125, 157796), (206, 95750), (250, 78898), (383, 51500), (412, 47875), (500, 39449), (515, 38300), (766, 25750), (1030, 19150), (1532, 12875), (1915, 10300), (2060, 9575), (2575, 7660), (3830, 5150)]