12718540

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{643}}^1$

素因数の和:718

約数の個数: 48

約数和(自身を含む): 28562688

約数和(自身を除く): 15844148

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 115, 172, 215, 230, 430, 460, 643, 860, 989, 1286, 1978, 2572, 3215, 3956, 4945, 6430, 9890, 12860, 14789, 19780, 27649, 29578, 55298, 59156, 73945, 110596, 138245, 147890, 276490, 295780, 552980, 635927, 1271854, 2543708, 3179635, 6359270, 12718540]

約数ペア:

[(1, 12718540), (2, 6359270), (4, 3179635), (5, 2543708), (10, 1271854), (20, 635927), (23, 552980), (43, 295780), (46, 276490), (86, 147890), (92, 138245), (115, 110596), (172, 73945), (215, 59156), (230, 55298), (430, 29578), (460, 27649), (643, 19780), (860, 14789), (989, 12860), (1286, 9890), (1978, 6430), (2572, 4945), (3215, 3956)]