1999736920

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{393649}}^1$

素因数の和:393787

約数の個数: 32

約数和(自身を含む): 4534848000

約数和(自身を除く): 2535111080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 5080, 393649, 787298, 1574596, 1968245, 3149192, 3936490, 7872980, 15745960, 49993423, 99986846, 199973692, 249967115, 399947384, 499934230, 999868460, 1999736920]

約数ペア:

[(1, 1999736920), (2, 999868460), (4, 499934230), (5, 399947384), (8, 249967115), (10, 199973692), (20, 99986846), (40, 49993423), (127, 15745960), (254, 7872980), (508, 3936490), (635, 3149192), (1016, 1968245), (1270, 1574596), (2540, 787298), (5080, 393649)]