129212020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{131849}}^1$

素因数の和:131872

約数の個数: 36

約数和(自身を含む): 315648900

約数和(自身を除く): 186436880

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 131849, 263698, 527396, 659245, 922943, 1318490, 1845886, 2636980, 3691772, 4614715, 6460601, 9229430, 12921202, 18458860, 25842404, 32303005, 64606010, 129212020]

約数ペア:

[(1, 129212020), (2, 64606010), (4, 32303005), (5, 25842404), (7, 18458860), (10, 12921202), (14, 9229430), (20, 6460601), (28, 4614715), (35, 3691772), (49, 2636980), (70, 1845886), (98, 1318490), (140, 922943), (196, 659245), (245, 527396), (490, 263698), (980, 131849)]