160994980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{2129}}^1$

素因数の和:2356

約数の個数: 48

約数和(自身を含む): 357840000

約数和(自身を除く): 196845020

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 199, 380, 398, 796, 995, 1990, 2129, 3781, 3980, 4258, 7562, 8516, 10645, 15124, 18905, 21290, 37810, 40451, 42580, 75620, 80902, 161804, 202255, 404510, 423671, 809020, 847342, 1694684, 2118355, 4236710, 8049749, 8473420, 16099498, 32198996, 40248745, 80497490, 160994980]

約数ペア:

[(1, 160994980), (2, 80497490), (4, 40248745), (5, 32198996), (10, 16099498), (19, 8473420), (20, 8049749), (38, 4236710), (76, 2118355), (95, 1694684), (190, 847342), (199, 809020), (380, 423671), (398, 404510), (796, 202255), (995, 161804), (1990, 80902), (2129, 75620), (3781, 42580), (3980, 40451), (4258, 37810), (7562, 21290), (8516, 18905), (10645, 15124)]