19999928

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{192307}}^1$

素因数の和:192326

約数の個数: 16

約数和(自身を含む): 40384680

約数和(自身を除く): 20384752

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 192307, 384614, 769228, 1538456, 2499991, 4999982, 9999964, 19999928]

約数ペア:

[(1, 19999928), (2, 9999964), (4, 4999982), (8, 2499991), (13, 1538456), (26, 769228), (52, 384614), (104, 192307)]