6511280

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{409}}^1$

素因数の和:621

約数の個数: 40

約数和(自身を含む): 15252000

約数和(自身を除く): 8740720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 409, 796, 818, 995, 1592, 1636, 1990, 2045, 3184, 3272, 3980, 4090, 6544, 7960, 8180, 15920, 16360, 32720, 81391, 162782, 325564, 406955, 651128, 813910, 1302256, 1627820, 3255640, 6511280]

約数ペア:

[(1, 6511280), (2, 3255640), (4, 1627820), (5, 1302256), (8, 813910), (10, 651128), (16, 406955), (20, 325564), (40, 162782), (80, 81391), (199, 32720), (398, 16360), (409, 15920), (796, 8180), (818, 7960), (995, 6544), (1592, 4090), (1636, 3980), (1990, 3272), (2045, 3184)]