20682620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{613}}^1$

素因数の和:870

約数の個数: 48

約数和(自身を含む): 49925568

約数和(自身を除く): 29242948

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 241, 482, 613, 964, 1205, 1226, 1687, 2410, 2452, 3065, 3374, 4291, 4820, 6130, 6748, 8435, 8582, 12260, 16870, 17164, 21455, 33740, 42910, 85820, 147733, 295466, 590932, 738665, 1034131, 1477330, 2068262, 2954660, 4136524, 5170655, 10341310, 20682620]

約数ペア:

[(1, 20682620), (2, 10341310), (4, 5170655), (5, 4136524), (7, 2954660), (10, 2068262), (14, 1477330), (20, 1034131), (28, 738665), (35, 590932), (70, 295466), (140, 147733), (241, 85820), (482, 42910), (613, 33740), (964, 21455), (1205, 17164), (1226, 16870), (1687, 12260), (2410, 8582), (2452, 8435), (3065, 6748), (3374, 6130), (4291, 4820)]