28218760

素因数分解:

$2^3\times 5^1\times {\mathrm{397}}^1\times {\mathrm{1777}}^1$

素因数の和:2185

約数の個数: 32

約数和(自身を含む): 63687960

約数和(自身を除く): 35469200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 397, 794, 1588, 1777, 1985, 3176, 3554, 3970, 7108, 7940, 8885, 14216, 15880, 17770, 35540, 71080, 705469, 1410938, 2821876, 3527345, 5643752, 7054690, 14109380, 28218760]

約数ペア:

[(1, 28218760), (2, 14109380), (4, 7054690), (5, 5643752), (8, 3527345), (10, 2821876), (20, 1410938), (40, 705469), (397, 71080), (794, 35540), (1588, 17770), (1777, 15880), (1985, 14216), (3176, 8885), (3554, 7940), (3970, 7108)]