19729550

素因数分解:

$2^1\times 5^2\times {\mathrm{197}}^1\times {\mathrm{2003}}^1$

素因数の和:2212

約数の個数: 24

約数和(自身を含む): 36901656

約数和(自身を除く): 17172106

約数列:

[1, 2, 5, 10, 25, 50, 197, 394, 985, 1970, 2003, 4006, 4925, 9850, 10015, 20030, 50075, 100150, 394591, 789182, 1972955, 3945910, 9864775, 19729550]

約数ペア:

[(1, 19729550), (2, 9864775), (5, 3945910), (10, 1972955), (25, 789182), (50, 394591), (197, 100150), (394, 50075), (985, 20030), (1970, 10015), (2003, 9850), (4006, 4925)]