39991040

素因数分解:

$2^8\times 5^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1$

素因数の和:377

約数の個数: 72

約数和(自身を含む): 96885600

約数和(自身を除く): 56894560

約数列:

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

約数ペア:

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