15719980

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{7211}}^1$

素因数の和:7329

約数の個数: 24

約数和(自身を含む): 33319440

約数和(自身を除く): 17599460

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 7211, 14422, 28844, 36055, 72110, 144220, 785999, 1571998, 3143996, 3929995, 7859990, 15719980]

約数ペア:

[(1, 15719980), (2, 7859990), (4, 3929995), (5, 3143996), (10, 1571998), (20, 785999), (109, 144220), (218, 72110), (436, 36055), (545, 28844), (1090, 14422), (2180, 7211)]