12504940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{499}}^1$

素因数の和:694

約数の個数: 48

約数和(自身を含む): 30240000

約数和(自身を除く): 17735060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 179, 358, 499, 716, 895, 998, 1253, 1790, 1996, 2495, 2506, 3493, 3580, 4990, 5012, 6265, 6986, 9980, 12530, 13972, 17465, 25060, 34930, 69860, 89321, 178642, 357284, 446605, 625247, 893210, 1250494, 1786420, 2500988, 3126235, 6252470, 12504940]

約数ペア:

[(1, 12504940), (2, 6252470), (4, 3126235), (5, 2500988), (7, 1786420), (10, 1250494), (14, 893210), (20, 625247), (28, 446605), (35, 357284), (70, 178642), (140, 89321), (179, 69860), (358, 34930), (499, 25060), (716, 17465), (895, 13972), (998, 12530), (1253, 9980), (1790, 6986), (1996, 6265), (2495, 5012), (2506, 4990), (3493, 3580)]