1640185880

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{383221}}^1$

素因数の和:383339

約数の個数: 32

約数和(自身を含む): 3724917840

約数和(自身を除く): 2084731960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 383221, 766442, 1532884, 1916105, 3065768, 3832210, 7664420, 15328840, 41004647, 82009294, 164018588, 205023235, 328037176, 410046470, 820092940, 1640185880]

約数ペア:

[(1, 1640185880), (2, 820092940), (4, 410046470), (5, 328037176), (8, 205023235), (10, 164018588), (20, 82009294), (40, 41004647), (107, 15328840), (214, 7664420), (428, 3832210), (535, 3065768), (856, 1916105), (1070, 1532884), (2140, 766442), (4280, 383221)]