19993880

素因数分解:

$2^3\times 5^1\times {\mathrm{191}}^1\times {\mathrm{2617}}^1$

素因数の和:2819

約数の個数: 32

約数和(自身を含む): 45239040

約数和(自身を除く): 25245160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 191, 382, 764, 955, 1528, 1910, 2617, 3820, 5234, 7640, 10468, 13085, 20936, 26170, 52340, 104680, 499847, 999694, 1999388, 2499235, 3998776, 4998470, 9996940, 19993880]

約数ペア:

[(1, 19993880), (2, 9996940), (4, 4998470), (5, 3998776), (8, 2499235), (10, 1999388), (20, 999694), (40, 499847), (191, 104680), (382, 52340), (764, 26170), (955, 20936), (1528, 13085), (1910, 10468), (2617, 7640), (3820, 5234)]