199940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{769}}^1$

素因数の和:791

約数の個数: 24

約数和(自身を含む): 452760

約数和(自身を除く): 252820

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 769, 1538, 3076, 3845, 7690, 9997, 15380, 19994, 39988, 49985, 99970, 199940]

約数ペア:

[(1, 199940), (2, 99970), (4, 49985), (5, 39988), (10, 19994), (13, 15380), (20, 9997), (26, 7690), (52, 3845), (65, 3076), (130, 1538), (260, 769)]