457990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{271}}^1$

素因数の和:304

約数の個数: 24

約数和(自身を含む): 895968

約数和(自身を除く): 437978

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 271, 338, 542, 845, 1355, 1690, 2710, 3523, 7046, 17615, 35230, 45799, 91598, 228995, 457990]

約数ペア:

[(1, 457990), (2, 228995), (5, 91598), (10, 45799), (13, 35230), (26, 17615), (65, 7046), (130, 3523), (169, 2710), (271, 1690), (338, 1355), (542, 845)]