15456680

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{787}}^1$

素因数の和:1289

約数の個数: 32

約数和(自身を含む): 34892640

約数和(自身を除く): 19435960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 787, 982, 1574, 1964, 2455, 3148, 3928, 3935, 4910, 6296, 7870, 9820, 15740, 19640, 31480, 386417, 772834, 1545668, 1932085, 3091336, 3864170, 7728340, 15456680]

約数ペア:

[(1, 15456680), (2, 7728340), (4, 3864170), (5, 3091336), (8, 1932085), (10, 1545668), (20, 772834), (40, 386417), (491, 31480), (787, 19640), (982, 15740), (1574, 9820), (1964, 7870), (2455, 6296), (3148, 4910), (3928, 3935)]