20781617703

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{443171}}^1$

素因数の和:443228

約数の個数: 48

約数和(自身を含む): 36375557760

約数和(自身を除く): 15593940057

約数列:

[1, 3, 7, 11, 21, 29, 33, 49, 77, 87, 147, 203, 231, 319, 539, 609, 957, 1421, 1617, 2233, 4263, 6699, 15631, 46893, 443171, 1329513, 3102197, 4874881, 9306591, 12851959, 14624643, 21715379, 34124167, 38555877, 65146137, 89963713, 102372501, 141371549, 238869169, 269891139, 424114647, 629745991, 716607507, 989600843, 1889237973, 2968802529, 6927205901, 20781617703]

約数ペア:

[(1, 20781617703), (3, 6927205901), (7, 2968802529), (11, 1889237973), (21, 989600843), (29, 716607507), (33, 629745991), (49, 424114647), (77, 269891139), (87, 238869169), (147, 141371549), (203, 102372501), (231, 89963713), (319, 65146137), (539, 38555877), (609, 34124167), (957, 21715379), (1421, 14624643), (1617, 12851959), (2233, 9306591), (4263, 4874881), (6699, 3102197), (15631, 1329513), (46893, 443171)]