64740020

素因数分解:

$2^2\times 5^1\times {\mathrm{443}}^1\times {\mathrm{7307}}^1$

素因数の和:7759

約数の個数: 24

約数和(自身を含む): 136279584

約数和(自身を除く): 71539564

約数列:

[1, 2, 4, 5, 10, 20, 443, 886, 1772, 2215, 4430, 7307, 8860, 14614, 29228, 36535, 73070, 146140, 3237001, 6474002, 12948004, 16185005, 32370010, 64740020]

約数ペア:

[(1, 64740020), (2, 32370010), (4, 16185005), (5, 12948004), (10, 6474002), (20, 3237001), (443, 146140), (886, 73070), (1772, 36535), (2215, 29228), (4430, 14614), (7307, 8860)]