30131960

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{6911}}^1$

素因数の和:7031

約数の個数: 32

約数和(自身を含む): 68428800

約数和(自身を除く): 38296840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 6911, 13822, 27644, 34555, 55288, 69110, 138220, 276440, 753299, 1506598, 3013196, 3766495, 6026392, 7532990, 15065980, 30131960]

約数ペア:

[(1, 30131960), (2, 15065980), (4, 7532990), (5, 6026392), (8, 3766495), (10, 3013196), (20, 1506598), (40, 753299), (109, 276440), (218, 138220), (436, 69110), (545, 55288), (872, 34555), (1090, 27644), (2180, 13822), (4360, 6911)]