21064220

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{8293}}^1$

素因数の和:8429

約数の個数: 24

約数和(自身を含む): 44588544

約数和(自身を除く): 23524324

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 8293, 16586, 33172, 41465, 82930, 165860, 1053211, 2106422, 4212844, 5266055, 10532110, 21064220]

約数ペア:

[(1, 21064220), (2, 10532110), (4, 5266055), (5, 4212844), (10, 2106422), (20, 1053211), (127, 165860), (254, 82930), (508, 41465), (635, 33172), (1270, 16586), (2540, 8293)]