64278380

素因数分解:

$2^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{7321}}^1$

素因数の和:7769

約数の個数: 24

約数和(自身を含む): 135310560

約数和(自身を除く): 71032180

約数列:

[1, 2, 4, 5, 10, 20, 439, 878, 1756, 2195, 4390, 7321, 8780, 14642, 29284, 36605, 73210, 146420, 3213919, 6427838, 12855676, 16069595, 32139190, 64278380]

約数ペア:

[(1, 64278380), (2, 32139190), (4, 16069595), (5, 12855676), (10, 6427838), (20, 3213919), (439, 146420), (878, 73210), (1756, 36605), (2195, 29284), (4390, 14642), (7321, 8780)]