16864281

素因数分解:

$3^4\times 7^3\times {\mathrm{607}}^1$

素因数の和:640

約数の個数: 40

約数和(自身を含む): 29427200

約数和(自身を除く): 12562919

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 343, 441, 567, 607, 1029, 1323, 1821, 3087, 3969, 4249, 5463, 9261, 12747, 16389, 27783, 29743, 38241, 49167, 89229, 114723, 208201, 267687, 344169, 624603, 803061, 1873809, 2409183, 5621427, 16864281]

約数ペア:

[(1, 16864281), (3, 5621427), (7, 2409183), (9, 1873809), (21, 803061), (27, 624603), (49, 344169), (63, 267687), (81, 208201), (147, 114723), (189, 89229), (343, 49167), (441, 38241), (567, 29743), (607, 27783), (1029, 16389), (1323, 12747), (1821, 9261), (3087, 5463), (3969, 4249)]