18976640

素因数分解:

$2^7\times 5^1\times {\mathrm{149}}^1\times {\mathrm{199}}^1$

素因数の和:367

約数の個数: 64

約数和(自身を含む): 45900000

約数和(自身を除く): 26923360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 149, 160, 199, 298, 320, 398, 596, 640, 745, 796, 995, 1192, 1490, 1592, 1990, 2384, 2980, 3184, 3980, 4768, 5960, 6368, 7960, 9536, 11920, 12736, 15920, 19072, 23840, 25472, 29651, 31840, 47680, 59302, 63680, 95360, 118604, 127360, 148255, 237208, 296510, 474416, 593020, 948832, 1186040, 1897664, 2372080, 3795328, 4744160, 9488320, 18976640]

約数ペア:

[(1, 18976640), (2, 9488320), (4, 4744160), (5, 3795328), (8, 2372080), (10, 1897664), (16, 1186040), (20, 948832), (32, 593020), (40, 474416), (64, 296510), (80, 237208), (128, 148255), (149, 127360), (160, 118604), (199, 95360), (298, 63680), (320, 59302), (398, 47680), (596, 31840), (640, 29651), (745, 25472), (796, 23840), (995, 19072), (1192, 15920), (1490, 12736), (1592, 11920), (1990, 9536), (2384, 7960), (2980, 6368), (3184, 5960), (3980, 4768)]