129421880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{462221}}^1$

素因数の和:462239

約数の個数: 32

約数和(自身を含む): 332799840

約数和(自身を除く): 203377960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 462221, 924442, 1848884, 2311105, 3235547, 3697768, 4622210, 6471094, 9244420, 12942188, 16177735, 18488840, 25884376, 32355470, 64710940, 129421880]

約数ペア:

[(1, 129421880), (2, 64710940), (4, 32355470), (5, 25884376), (7, 18488840), (8, 16177735), (10, 12942188), (14, 9244420), (20, 6471094), (28, 4622210), (35, 3697768), (40, 3235547), (56, 2311105), (70, 1848884), (140, 924442), (280, 462221)]