1661875640

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{466819}}^1$

素因数の和:466919

約数の個数: 32

約数和(自身を含む): 3781242000

約数和(自身を除く): 2119366360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 466819, 933638, 1867276, 2334095, 3734552, 4668190, 9336380, 18672760, 41546891, 83093782, 166187564, 207734455, 332375128, 415468910, 830937820, 1661875640]

約数ペア:

[(1, 1661875640), (2, 830937820), (4, 415468910), (5, 332375128), (8, 207734455), (10, 166187564), (20, 83093782), (40, 41546891), (89, 18672760), (178, 9336380), (356, 4668190), (445, 3734552), (712, 2334095), (890, 1867276), (1780, 933638), (3560, 466819)]