319158440

素因数分解:

$2^3\times 5^1\times {\mathrm{7978961}}^1$

素因数の和:7978972

約数の個数: 16

約数和(自身を含む): 718106580

約数和(自身を除く): 398948140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 7978961, 15957922, 31915844, 39894805, 63831688, 79789610, 159579220, 319158440]

約数ペア:

[(1, 319158440), (2, 159579220), (4, 79789610), (5, 63831688), (8, 39894805), (10, 31915844), (20, 15957922), (40, 7978961)]