72120020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{515143}}^1$

素因数の和:515159

約数の個数: 24

約数和(自身を含む): 173088384

約数和(自身を除く): 100968364

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 515143, 1030286, 2060572, 2575715, 3606001, 5151430, 7212002, 10302860, 14424004, 18030005, 36060010, 72120020]

約数ペア:

[(1, 72120020), (2, 36060010), (4, 18030005), (5, 14424004), (7, 10302860), (10, 7212002), (14, 5151430), (20, 3606001), (28, 2575715), (35, 2060572), (70, 1030286), (140, 515143)]