70820020

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{5507}}^1$

素因数の和:6159

約数の個数: 24

約数和(自身を含む): 148980384

約数和(自身を除く): 78160364

約数列:

[1, 2, 4, 5, 10, 20, 643, 1286, 2572, 3215, 5507, 6430, 11014, 12860, 22028, 27535, 55070, 110140, 3541001, 7082002, 14164004, 17705005, 35410010, 70820020]

約数ペア:

[(1, 70820020), (2, 35410010), (4, 17705005), (5, 14164004), (10, 7082002), (20, 3541001), (643, 110140), (1286, 55070), (2572, 27535), (3215, 22028), (5507, 12860), (6430, 11014)]