21573554180

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{285289}}^1$

素因数の和:285516

約数の個数: 48

約数和(自身を含む): 47928720000

約数和(自身を除く): 26355165820

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 199, 380, 398, 796, 995, 1990, 3781, 3980, 7562, 15124, 18905, 37810, 75620, 285289, 570578, 1141156, 1426445, 2852890, 5420491, 5705780, 10840982, 21681964, 27102455, 54204910, 56772511, 108409820, 113545022, 227090044, 283862555, 567725110, 1078677709, 1135450220, 2157355418, 4314710836, 5393388545, 10786777090, 21573554180]

約数ペア:

[(1, 21573554180), (2, 10786777090), (4, 5393388545), (5, 4314710836), (10, 2157355418), (19, 1135450220), (20, 1078677709), (38, 567725110), (76, 283862555), (95, 227090044), (190, 113545022), (199, 108409820), (380, 56772511), (398, 54204910), (796, 27102455), (995, 21681964), (1990, 10840982), (3781, 5705780), (3980, 5420491), (7562, 2852890), (15124, 1426445), (18905, 1141156), (37810, 570578), (75620, 285289)]