20565521872

素因数分解:

$2^4\times 7^2\times {\mathrm{19}}^1\times {\mathrm{1380607}}^1$

素因数の和:1380648

約数の個数: 60

約数和(自身を含む): 48790686720

約数和(自身を除く): 28225164848

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 38, 49, 56, 76, 98, 112, 133, 152, 196, 266, 304, 392, 532, 784, 931, 1064, 1862, 2128, 3724, 7448, 14896, 1380607, 2761214, 5522428, 9664249, 11044856, 19328498, 22089712, 26231533, 38656996, 52463066, 67649743, 77313992, 104926132, 135299486, 154627984, 183620731, 209852264, 270598972, 367241462, 419704528, 541197944, 734482924, 1082395888, 1285345117, 1468965848, 2570690234, 2937931696, 5141380468, 10282760936, 20565521872]

約数ペア:

[(1, 20565521872), (2, 10282760936), (4, 5141380468), (7, 2937931696), (8, 2570690234), (14, 1468965848), (16, 1285345117), (19, 1082395888), (28, 734482924), (38, 541197944), (49, 419704528), (56, 367241462), (76, 270598972), (98, 209852264), (112, 183620731), (133, 154627984), (152, 135299486), (196, 104926132), (266, 77313992), (304, 67649743), (392, 52463066), (532, 38656996), (784, 26231533), (931, 22089712), (1064, 19328498), (1862, 11044856), (2128, 9664249), (3724, 5522428), (7448, 2761214), (14896, 1380607)]