21290147307

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{643}}^1\times {\mathrm{1979}}^1$

素因数の和:2665

約数の個数: 72

約数和(自身を含む): 36402125760

約数和(自身を除く): 15111978453

約数列:

[1, 3, 9, 11, 13, 33, 39, 99, 117, 143, 169, 429, 507, 643, 1287, 1521, 1859, 1929, 1979, 5577, 5787, 5937, 7073, 8359, 16731, 17811, 21219, 21769, 25077, 25727, 63657, 65307, 75231, 77181, 91949, 108667, 195921, 231543, 275847, 282997, 326001, 334451, 827541, 848991, 978003, 1003353, 1195337, 1272497, 2546973, 3010059, 3586011, 3678961, 3817491, 10758033, 11036883, 11452473, 13997467, 16542461, 33110649, 41992401, 49627383, 125977203, 148882149, 181967071, 215051993, 545901213, 645155979, 1637703639, 1935467937, 2365571923, 7096715769, 21290147307]

約数ペア:

[(1, 21290147307), (3, 7096715769), (9, 2365571923), (11, 1935467937), (13, 1637703639), (33, 645155979), (39, 545901213), (99, 215051993), (117, 181967071), (143, 148882149), (169, 125977203), (429, 49627383), (507, 41992401), (643, 33110649), (1287, 16542461), (1521, 13997467), (1859, 11452473), (1929, 11036883), (1979, 10758033), (5577, 3817491), (5787, 3678961), (5937, 3586011), (7073, 3010059), (8359, 2546973), (16731, 1272497), (17811, 1195337), (21219, 1003353), (21769, 978003), (25077, 848991), (25727, 827541), (63657, 334451), (65307, 326001), (75231, 282997), (77181, 275847), (91949, 231543), (108667, 195921)]