306555640

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{38903}}^1$

素因数の和:39111

約数の個数: 32

約数和(自身を含む): 693269280

約数和(自身を除く): 386713640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 38903, 77806, 155612, 194515, 311224, 389030, 778060, 1556120, 7663891, 15327782, 30655564, 38319455, 61311128, 76638910, 153277820, 306555640]

約数ペア:

[(1, 306555640), (2, 153277820), (4, 76638910), (5, 61311128), (8, 38319455), (10, 30655564), (20, 15327782), (40, 7663891), (197, 1556120), (394, 778060), (788, 389030), (985, 311224), (1576, 194515), (1970, 155612), (3940, 77806), (7880, 38903)]