313680380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{449}}^1\times {\mathrm{2687}}^1$

素因数の和:3158

約数の個数: 48

約数和(自身を含む): 711244800

約数和(自身を除く): 397564420

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 449, 898, 1796, 2245, 2687, 4490, 5374, 5837, 8980, 10748, 11674, 13435, 23348, 26870, 29185, 34931, 53740, 58370, 69862, 116740, 139724, 174655, 349310, 698620, 1206463, 2412926, 4825852, 6032315, 12064630, 15684019, 24129260, 31368038, 62736076, 78420095, 156840190, 313680380]

約数ペア:

[(1, 313680380), (2, 156840190), (4, 78420095), (5, 62736076), (10, 31368038), (13, 24129260), (20, 15684019), (26, 12064630), (52, 6032315), (65, 4825852), (130, 2412926), (260, 1206463), (449, 698620), (898, 349310), (1796, 174655), (2245, 139724), (2687, 116740), (4490, 69862), (5374, 58370), (5837, 53740), (8980, 34931), (10748, 29185), (11674, 26870), (13435, 23348)]