208360960

素因数分解:

$2^9\times 5^1\times {\mathrm{199}}^1\times {\mathrm{409}}^1$

素因数の和:631

約数の個数: 80

約数和(自身を含む): 503316000

約数和(自身を除く): 294955040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 199, 256, 320, 398, 409, 512, 640, 796, 818, 995, 1280, 1592, 1636, 1990, 2045, 2560, 3184, 3272, 3980, 4090, 6368, 6544, 7960, 8180, 12736, 13088, 15920, 16360, 25472, 26176, 31840, 32720, 50944, 52352, 63680, 65440, 81391, 101888, 104704, 127360, 130880, 162782, 209408, 254720, 261760, 325564, 406955, 509440, 523520, 651128, 813910, 1047040, 1302256, 1627820, 2604512, 3255640, 5209024, 6511280, 10418048, 13022560, 20836096, 26045120, 41672192, 52090240, 104180480, 208360960]

約数ペア:

[(1, 208360960), (2, 104180480), (4, 52090240), (5, 41672192), (8, 26045120), (10, 20836096), (16, 13022560), (20, 10418048), (32, 6511280), (40, 5209024), (64, 3255640), (80, 2604512), (128, 1627820), (160, 1302256), (199, 1047040), (256, 813910), (320, 651128), (398, 523520), (409, 509440), (512, 406955), (640, 325564), (796, 261760), (818, 254720), (995, 209408), (1280, 162782), (1592, 130880), (1636, 127360), (1990, 104704), (2045, 101888), (2560, 81391), (3184, 65440), (3272, 63680), (3980, 52352), (4090, 50944), (6368, 32720), (6544, 31840), (7960, 26176), (8180, 25472), (12736, 16360), (13088, 15920)]