208038920

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{2699}}^1$

素因数の和:2798

約数の個数: 64

約数和(自身を含む): 489888000

約数和(自身を除く): 281849080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 47, 82, 94, 164, 188, 205, 235, 328, 376, 410, 470, 820, 940, 1640, 1880, 1927, 2699, 3854, 5398, 7708, 9635, 10796, 13495, 15416, 19270, 21592, 26990, 38540, 53980, 77080, 107960, 110659, 126853, 221318, 253706, 442636, 507412, 553295, 634265, 885272, 1014824, 1106590, 1268530, 2213180, 2537060, 4426360, 5074120, 5200973, 10401946, 20803892, 26004865, 41607784, 52009730, 104019460, 208038920]

約数ペア:

[(1, 208038920), (2, 104019460), (4, 52009730), (5, 41607784), (8, 26004865), (10, 20803892), (20, 10401946), (40, 5200973), (41, 5074120), (47, 4426360), (82, 2537060), (94, 2213180), (164, 1268530), (188, 1106590), (205, 1014824), (235, 885272), (328, 634265), (376, 553295), (410, 507412), (470, 442636), (820, 253706), (940, 221318), (1640, 126853), (1880, 110659), (1927, 107960), (2699, 77080), (3854, 53980), (5398, 38540), (7708, 26990), (9635, 21592), (10796, 19270), (13495, 15416)]