206577920

素因数分解:

$2^8\times 5^1\times {\mathrm{199}}^1\times {\mathrm{811}}^1$

素因数の和:1031

約数の個数: 72

約数和(自身を含む): 497918400

約数和(自身を除く): 291340480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 199, 256, 320, 398, 640, 796, 811, 995, 1280, 1592, 1622, 1990, 3184, 3244, 3980, 4055, 6368, 6488, 7960, 8110, 12736, 12976, 15920, 16220, 25472, 25952, 31840, 32440, 50944, 51904, 63680, 64880, 103808, 127360, 129760, 161389, 207616, 254720, 259520, 322778, 519040, 645556, 806945, 1038080, 1291112, 1613890, 2582224, 3227780, 5164448, 6455560, 10328896, 12911120, 20657792, 25822240, 41315584, 51644480, 103288960, 206577920]

約数ペア:

[(1, 206577920), (2, 103288960), (4, 51644480), (5, 41315584), (8, 25822240), (10, 20657792), (16, 12911120), (20, 10328896), (32, 6455560), (40, 5164448), (64, 3227780), (80, 2582224), (128, 1613890), (160, 1291112), (199, 1038080), (256, 806945), (320, 645556), (398, 519040), (640, 322778), (796, 259520), (811, 254720), (995, 207616), (1280, 161389), (1592, 129760), (1622, 127360), (1990, 103808), (3184, 64880), (3244, 63680), (3980, 51904), (4055, 50944), (6368, 32440), (6488, 31840), (7960, 25952), (8110, 25472), (12736, 16220), (12976, 15920)]