305965180

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{140351}}^1$

素因数の和:140469

約数の個数: 24

約数和(自身を含む): 648426240

約数和(自身を除く): 342461060

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 140351, 280702, 561404, 701755, 1403510, 2807020, 15298259, 30596518, 61193036, 76491295, 152982590, 305965180]

約数ペア:

[(1, 305965180), (2, 152982590), (4, 76491295), (5, 61193036), (10, 30596518), (20, 15298259), (109, 2807020), (218, 1403510), (436, 701755), (545, 561404), (1090, 280702), (2180, 140351)]