890290180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{17207}}^1$

素因数の和:17428

約数の個数: 48

約数和(自身を含む): 2023660800

約数和(自身を除く): 1133370620

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 199, 260, 398, 796, 995, 1990, 2587, 3980, 5174, 10348, 12935, 17207, 25870, 34414, 51740, 68828, 86035, 172070, 223691, 344140, 447382, 894764, 1118455, 2236910, 3424193, 4473820, 6848386, 13696772, 17120965, 34241930, 44514509, 68483860, 89029018, 178058036, 222572545, 445145090, 890290180]

約数ペア:

[(1, 890290180), (2, 445145090), (4, 222572545), (5, 178058036), (10, 89029018), (13, 68483860), (20, 44514509), (26, 34241930), (52, 17120965), (65, 13696772), (130, 6848386), (199, 4473820), (260, 3424193), (398, 2236910), (796, 1118455), (995, 894764), (1990, 447382), (2587, 344140), (3980, 223691), (5174, 172070), (10348, 86035), (12935, 68828), (17207, 51740), (25870, 34414)]