319040780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{4219}}^1$

素因数の和:4446

約数の個数: 48

約数和(自身を含む): 708960000

約数和(自身を除く): 389919220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 199, 380, 398, 796, 995, 1990, 3781, 3980, 4219, 7562, 8438, 15124, 16876, 18905, 21095, 37810, 42190, 75620, 80161, 84380, 160322, 320644, 400805, 801610, 839581, 1603220, 1679162, 3358324, 4197905, 8395810, 15952039, 16791620, 31904078, 63808156, 79760195, 159520390, 319040780]

約数ペア:

[(1, 319040780), (2, 159520390), (4, 79760195), (5, 63808156), (10, 31904078), (19, 16791620), (20, 15952039), (38, 8395810), (76, 4197905), (95, 3358324), (190, 1679162), (199, 1603220), (380, 839581), (398, 801610), (796, 400805), (995, 320644), (1990, 160322), (3781, 84380), (3980, 80161), (4219, 75620), (7562, 42190), (8438, 37810), (15124, 21095), (16876, 18905)]