1278108520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2457901}}^1$

素因数の和:2457925

約数の個数: 32

約数和(自身を含む): 3096956520

約数和(自身を除く): 1818848000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 2457901, 4915802, 9831604, 12289505, 19663208, 24579010, 31952713, 49158020, 63905426, 98316040, 127810852, 159763565, 255621704, 319527130, 639054260, 1278108520]

約数ペア:

[(1, 1278108520), (2, 639054260), (4, 319527130), (5, 255621704), (8, 159763565), (10, 127810852), (13, 98316040), (20, 63905426), (26, 49158020), (40, 31952713), (52, 24579010), (65, 19663208), (104, 12289505), (130, 9831604), (260, 4915802), (520, 2457901)]