21520512170

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{69421007}}^1$

素因数の和:69421045

約数の個数: 16

約数和(自身を含む): 39986500608

約数和(自身を除く): 18465988438

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 69421007, 138842014, 347105035, 694210070, 2152051217, 4304102434, 10760256085, 21520512170]

約数ペア:

[(1, 21520512170), (2, 10760256085), (5, 4304102434), (10, 2152051217), (31, 694210070), (62, 347105035), (155, 138842014), (310, 69421007)]