20406897

素因数分解:

$3^7\times 7^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:102

約数の個数: 64

約数和(自身を含む): 36945920

約数和(自身を除く): 16539023

約数列:

[1, 3, 7, 9, 21, 27, 31, 43, 63, 81, 93, 129, 189, 217, 243, 279, 301, 387, 567, 651, 729, 837, 903, 1161, 1333, 1701, 1953, 2187, 2511, 2709, 3483, 3999, 5103, 5859, 7533, 8127, 9331, 10449, 11997, 15309, 17577, 22599, 24381, 27993, 31347, 35991, 52731, 67797, 73143, 83979, 94041, 107973, 158193, 219429, 251937, 323919, 474579, 658287, 755811, 971757, 2267433, 2915271, 6802299, 20406897]

約数ペア:

[(1, 20406897), (3, 6802299), (7, 2915271), (9, 2267433), (21, 971757), (27, 755811), (31, 658287), (43, 474579), (63, 323919), (81, 251937), (93, 219429), (129, 158193), (189, 107973), (217, 94041), (243, 83979), (279, 73143), (301, 67797), (387, 52731), (567, 35991), (651, 31347), (729, 27993), (837, 24381), (903, 22599), (1161, 17577), (1333, 15309), (1701, 11997), (1953, 10449), (2187, 9331), (2511, 8127), (2709, 7533), (3483, 5859), (3999, 5103)]