20304620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20719}}^1$

素因数の和:20742

約数の個数: 36

約数和(自身を含む): 49603680

約数和(自身を除く): 29299060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20719, 41438, 82876, 103595, 145033, 207190, 290066, 414380, 580132, 725165, 1015231, 1450330, 2030462, 2900660, 4060924, 5076155, 10152310, 20304620]

約数ペア:

[(1, 20304620), (2, 10152310), (4, 5076155), (5, 4060924), (7, 2900660), (10, 2030462), (14, 1450330), (20, 1015231), (28, 725165), (35, 580132), (49, 414380), (70, 290066), (98, 207190), (140, 145033), (196, 103595), (245, 82876), (490, 41438), (980, 20719)]