810719960

素因数分解:

$2^3\times 5^1\times {\mathrm{251}}^1\times {\mathrm{80749}}^1$

素因数の和:81011

約数の個数: 32

約数和(自身を含む): 1831410000

約数和(自身を除く): 1020690040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 251, 502, 1004, 1255, 2008, 2510, 5020, 10040, 80749, 161498, 322996, 403745, 645992, 807490, 1614980, 3229960, 20267999, 40535998, 81071996, 101339995, 162143992, 202679990, 405359980, 810719960]

約数ペア:

[(1, 810719960), (2, 405359980), (4, 202679990), (5, 162143992), (8, 101339995), (10, 81071996), (20, 40535998), (40, 20267999), (251, 3229960), (502, 1614980), (1004, 807490), (1255, 645992), (2008, 403745), (2510, 322996), (5020, 161498), (10040, 80749)]