64945900

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{8221}}^1$

素因数の和:8314

約数の個数: 36

約数和(自身を含む): 142733920

約数和(自身を除く): 77788020

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 3950, 7900, 8221, 16442, 32884, 41105, 82210, 164420, 205525, 411050, 649459, 822100, 1298918, 2597836, 3247295, 6494590, 12989180, 16236475, 32472950, 64945900]

約数ペア:

[(1, 64945900), (2, 32472950), (4, 16236475), (5, 12989180), (10, 6494590), (20, 3247295), (25, 2597836), (50, 1298918), (79, 822100), (100, 649459), (158, 411050), (316, 205525), (395, 164420), (790, 82210), (1580, 41105), (1975, 32884), (3950, 16442), (7900, 8221)]