87212020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{622943}}^1$

素因数の和:622959

約数の個数: 24

約数和(自身を含む): 209309184

約数和(自身を除く): 122097164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 622943, 1245886, 2491772, 3114715, 4360601, 6229430, 8721202, 12458860, 17442404, 21803005, 43606010, 87212020]

約数ペア:

[(1, 87212020), (2, 43606010), (4, 21803005), (5, 17442404), (7, 12458860), (10, 8721202), (14, 6229430), (20, 4360601), (28, 3114715), (35, 2491772), (70, 1245886), (140, 622943)]