20704880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{36973}}^1$

素因数の和:36993

約数の個数: 40

約数和(自身を含む): 55017312

約数和(自身を除く): 34312432

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 36973, 73946, 147892, 184865, 258811, 295784, 369730, 517622, 591568, 739460, 1035244, 1294055, 1478920, 2070488, 2588110, 2957840, 4140976, 5176220, 10352440, 20704880]

約数ペア:

[(1, 20704880), (2, 10352440), (4, 5176220), (5, 4140976), (7, 2957840), (8, 2588110), (10, 2070488), (14, 1478920), (16, 1294055), (20, 1035244), (28, 739460), (35, 591568), (40, 517622), (56, 369730), (70, 295784), (80, 258811), (112, 184865), (140, 147892), (280, 73946), (560, 36973)]