13239440

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2713}}^1$

素因数の和:2787

約数の個数: 40

約数和(自身を含む): 31297848

約数和(自身を除く): 18058408

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 2713, 4880, 5426, 10852, 13565, 21704, 27130, 43408, 54260, 108520, 165493, 217040, 330986, 661972, 827465, 1323944, 1654930, 2647888, 3309860, 6619720, 13239440]

約数ペア:

[(1, 13239440), (2, 6619720), (4, 3309860), (5, 2647888), (8, 1654930), (10, 1323944), (16, 827465), (20, 661972), (40, 330986), (61, 217040), (80, 165493), (122, 108520), (244, 54260), (305, 43408), (488, 27130), (610, 21704), (976, 13565), (1220, 10852), (2440, 5426), (2713, 4880)]