19819550

素因数分解:

$2^1\times 5^2\times {\mathrm{389}}^1\times {\mathrm{1019}}^1$

素因数の和:1420

約数の個数: 24

約数和(自身を含む): 36995400

約数和(自身を除く): 17175850

約数列:

[1, 2, 5, 10, 25, 50, 389, 778, 1019, 1945, 2038, 3890, 5095, 9725, 10190, 19450, 25475, 50950, 396391, 792782, 1981955, 3963910, 9909775, 19819550]

約数ペア:

[(1, 19819550), (2, 9909775), (5, 3963910), (10, 1981955), (25, 792782), (50, 396391), (389, 50950), (778, 25475), (1019, 19450), (1945, 10190), (2038, 9725), (3890, 5095)]