1285201040

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{8209}}^1$

素因数の和:8344

約数の個数: 80

約数和(自身を含む): 3176284800

約数和(自身を除く): 1891083760

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 103, 152, 190, 206, 304, 380, 412, 515, 760, 824, 1030, 1520, 1648, 1957, 2060, 3914, 4120, 7828, 8209, 8240, 9785, 15656, 16418, 19570, 31312, 32836, 39140, 41045, 65672, 78280, 82090, 131344, 155971, 156560, 164180, 311942, 328360, 623884, 656720, 779855, 845527, 1247768, 1559710, 1691054, 2495536, 3119420, 3382108, 4227635, 6238840, 6764216, 8455270, 12477680, 13528432, 16065013, 16910540, 32130026, 33821080, 64260052, 67642160, 80325065, 128520104, 160650130, 257040208, 321300260, 642600520, 1285201040]

約数ペア:

[(1, 1285201040), (2, 642600520), (4, 321300260), (5, 257040208), (8, 160650130), (10, 128520104), (16, 80325065), (19, 67642160), (20, 64260052), (38, 33821080), (40, 32130026), (76, 16910540), (80, 16065013), (95, 13528432), (103, 12477680), (152, 8455270), (190, 6764216), (206, 6238840), (304, 4227635), (380, 3382108), (412, 3119420), (515, 2495536), (760, 1691054), (824, 1559710), (1030, 1247768), (1520, 845527), (1648, 779855), (1957, 656720), (2060, 623884), (3914, 328360), (4120, 311942), (7828, 164180), (8209, 156560), (8240, 155971), (9785, 131344), (15656, 82090), (16418, 78280), (19570, 65672), (31312, 41045), (32836, 39140)]