20477660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1367}}^1$

素因数の和:1490

約数の個数: 48

約数和(自身を含む): 49641984

約数和(自身を除く): 29164324

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 749, 1070, 1367, 1498, 2140, 2734, 2996, 3745, 5468, 6835, 7490, 9569, 13670, 14980, 19138, 27340, 38276, 47845, 95690, 146269, 191380, 292538, 585076, 731345, 1023883, 1462690, 2047766, 2925380, 4095532, 5119415, 10238830, 20477660]

約数ペア:

[(1, 20477660), (2, 10238830), (4, 5119415), (5, 4095532), (7, 2925380), (10, 2047766), (14, 1462690), (20, 1023883), (28, 731345), (35, 585076), (70, 292538), (107, 191380), (140, 146269), (214, 95690), (428, 47845), (535, 38276), (749, 27340), (1070, 19138), (1367, 14980), (1498, 13670), (2140, 9569), (2734, 7490), (2996, 6835), (3745, 5468)]