65120020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{66449}}^1$

素因数の和:66472

約数の個数: 36

約数和(自身を含む): 159081300

約数和(自身を除く): 93961280

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 66449, 132898, 265796, 332245, 465143, 664490, 930286, 1328980, 1860572, 2325715, 3256001, 4651430, 6512002, 9302860, 13024004, 16280005, 32560010, 65120020]

約数ペア:

[(1, 65120020), (2, 32560010), (4, 16280005), (5, 13024004), (7, 9302860), (10, 6512002), (14, 4651430), (20, 3256001), (28, 2325715), (35, 1860572), (49, 1328980), (70, 930286), (98, 664490), (140, 465143), (196, 332245), (245, 265796), (490, 132898), (980, 66449)]