19380860

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{4919}}^1$

素因数の和:5125

約数の個数: 24

約数和(自身を含む): 40914720

約数和(自身を除く): 21533860

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 4919, 9838, 19676, 24595, 49190, 98380, 969043, 1938086, 3876172, 4845215, 9690430, 19380860]

約数ペア:

[(1, 19380860), (2, 9690430), (4, 4845215), (5, 3876172), (10, 1938086), (20, 969043), (197, 98380), (394, 49190), (788, 24595), (985, 19676), (1970, 9838), (3940, 4919)]