20768720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37087}}^1$

素因数の和:37107

約数の個数: 40

約数和(自身を含む): 55186944

約数和(自身を除く): 34418224

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 37087, 74174, 148348, 185435, 259609, 296696, 370870, 519218, 593392, 741740, 1038436, 1298045, 1483480, 2076872, 2596090, 2966960, 4153744, 5192180, 10384360, 20768720]

約数ペア:

[(1, 20768720), (2, 10384360), (4, 5192180), (5, 4153744), (7, 2966960), (8, 2596090), (10, 2076872), (14, 1483480), (16, 1298045), (20, 1038436), (28, 741740), (35, 593392), (40, 519218), (56, 370870), (70, 296696), (80, 259609), (112, 185435), (140, 148348), (280, 74174), (560, 37087)]