81461457

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{353}}^1$

素因数の和:420

約数の個数: 80

約数和(自身を含む): 156258432

約数和(自身を除く): 74796975

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 37, 63, 77, 81, 99, 111, 189, 231, 259, 297, 333, 353, 407, 567, 693, 777, 891, 999, 1059, 1221, 2079, 2331, 2471, 2849, 2997, 3177, 3663, 3883, 6237, 6993, 7413, 8547, 9531, 10989, 11649, 13061, 20979, 22239, 25641, 27181, 28593, 32967, 34947, 39183, 66717, 76923, 81543, 91427, 104841, 117549, 143671, 200151, 230769, 244629, 274281, 314523, 352647, 431013, 733887, 822843, 1005697, 1057941, 1293039, 2201661, 2468529, 3017091, 3879117, 7405587, 9051273, 11637351, 27153819, 81461457]

約数ペア:

[(1, 81461457), (3, 27153819), (7, 11637351), (9, 9051273), (11, 7405587), (21, 3879117), (27, 3017091), (33, 2468529), (37, 2201661), (63, 1293039), (77, 1057941), (81, 1005697), (99, 822843), (111, 733887), (189, 431013), (231, 352647), (259, 314523), (297, 274281), (333, 244629), (353, 230769), (407, 200151), (567, 143671), (693, 117549), (777, 104841), (891, 91427), (999, 81543), (1059, 76923), (1221, 66717), (2079, 39183), (2331, 34947), (2471, 32967), (2849, 28593), (2997, 27181), (3177, 25641), (3663, 22239), (3883, 20979), (6237, 13061), (6993, 11649), (7413, 10989), (8547, 9531)]