19971500

素因数分解:

$2^2\times 5^3\times {\mathrm{59}}^1\times {\mathrm{677}}^1$

素因数の和:755

約数の個数: 48

約数和(自身を含む): 44422560

約数和(自身を除く): 24451060

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 59, 100, 118, 125, 236, 250, 295, 500, 590, 677, 1180, 1354, 1475, 2708, 2950, 3385, 5900, 6770, 7375, 13540, 14750, 16925, 29500, 33850, 39943, 67700, 79886, 84625, 159772, 169250, 199715, 338500, 399430, 798860, 998575, 1997150, 3994300, 4992875, 9985750, 19971500]

約数ペア:

[(1, 19971500), (2, 9985750), (4, 4992875), (5, 3994300), (10, 1997150), (20, 998575), (25, 798860), (50, 399430), (59, 338500), (100, 199715), (118, 169250), (125, 159772), (236, 84625), (250, 79886), (295, 67700), (500, 39943), (590, 33850), (677, 29500), (1180, 16925), (1354, 14750), (1475, 13540), (2708, 7375), (2950, 6770), (3385, 5900)]