20518785

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{21713}}^1$

素因数の和:21734

約数の個数: 32

約数和(自身を含む): 41690880

約数和(自身を除く): 21172095

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 21713, 65139, 108565, 151991, 195417, 325695, 455973, 586251, 759955, 977085, 1367919, 2279865, 2931255, 4103757, 6839595, 20518785]

約数ペア:

[(1, 20518785), (3, 6839595), (5, 4103757), (7, 2931255), (9, 2279865), (15, 1367919), (21, 977085), (27, 759955), (35, 586251), (45, 455973), (63, 325695), (105, 195417), (135, 151991), (189, 108565), (315, 65139), (945, 21713)]