19889503928

素因数分解:

$2^3\times 7^1\times {\mathrm{355169713}}^1$

素因数の和:355169726

約数の個数: 16

約数和(自身を含む): 42620365680

約数和(自身を除く): 22730861752

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 355169713, 710339426, 1420678852, 2486187991, 2841357704, 4972375982, 9944751964, 19889503928]

約数ペア:

[(1, 19889503928), (2, 9944751964), (4, 4972375982), (7, 2841357704), (8, 2486187991), (14, 1420678852), (28, 710339426), (56, 355169713)]