79982080

素因数分解:

$2^9\times 5^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1$

素因数の和:379

約数の個数: 80

約数和(自身を含む): 193960800

約数和(自身を除く): 113978720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 157, 160, 199, 256, 314, 320, 398, 512, 628, 640, 785, 796, 995, 1256, 1280, 1570, 1592, 1990, 2512, 2560, 3140, 3184, 3980, 5024, 6280, 6368, 7960, 10048, 12560, 12736, 15920, 20096, 25120, 25472, 31243, 31840, 40192, 50240, 50944, 62486, 63680, 80384, 100480, 101888, 124972, 127360, 156215, 200960, 249944, 254720, 312430, 401920, 499888, 509440, 624860, 999776, 1249720, 1999552, 2499440, 3999104, 4998880, 7998208, 9997760, 15996416, 19995520, 39991040, 79982080]

約数ペア:

[(1, 79982080), (2, 39991040), (4, 19995520), (5, 15996416), (8, 9997760), (10, 7998208), (16, 4998880), (20, 3999104), (32, 2499440), (40, 1999552), (64, 1249720), (80, 999776), (128, 624860), (157, 509440), (160, 499888), (199, 401920), (256, 312430), (314, 254720), (320, 249944), (398, 200960), (512, 156215), (628, 127360), (640, 124972), (785, 101888), (796, 100480), (995, 80384), (1256, 63680), (1280, 62486), (1570, 50944), (1592, 50240), (1990, 40192), (2512, 31840), (2560, 31243), (3140, 25472), (3184, 25120), (3980, 20096), (5024, 15920), (6280, 12736), (6368, 12560), (7960, 10048)]