15988240

素因数分解:

$2^4\times 5^1\times {\mathrm{199853}}^1$

素因数の和:199866

約数の個数: 20

約数和(自身を含む): 37172844

約数和(自身を除く): 21184604

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199853, 399706, 799412, 999265, 1598824, 1998530, 3197648, 3997060, 7994120, 15988240]

約数ペア:

[(1, 15988240), (2, 7994120), (4, 3997060), (5, 3197648), (8, 1998530), (10, 1598824), (16, 999265), (20, 799412), (40, 399706), (80, 199853)]