640238020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1883053}}^1$

素因数の和:1883079

約数の個数: 24

約数和(自身を含む): 1423588824

約数和(自身を除く): 783350804

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 1883053, 3766106, 7532212, 9415265, 18830530, 32011901, 37661060, 64023802, 128047604, 160059505, 320119010, 640238020]

約数ペア:

[(1, 640238020), (2, 320119010), (4, 160059505), (5, 128047604), (10, 64023802), (17, 37661060), (20, 32011901), (34, 18830530), (68, 9415265), (85, 7532212), (170, 3766106), (340, 1883053)]