221444307

素因数分解:

$3^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{257}}^1$

素因数の和:417

約数の個数: 64

約数和(自身を含む): 388362240

約数和(自身を除く): 166917933

約数列:

[1, 3, 7, 9, 21, 27, 47, 63, 97, 141, 189, 257, 291, 329, 423, 679, 771, 873, 987, 1269, 1799, 2037, 2313, 2619, 2961, 4559, 5397, 6111, 6939, 8883, 12079, 13677, 16191, 18333, 24929, 31913, 36237, 41031, 48573, 74787, 84553, 95739, 108711, 123093, 174503, 224361, 253659, 287217, 326133, 523509, 673083, 760977, 861651, 1171663, 1570527, 2282931, 3514989, 4711581, 8201641, 10544967, 24604923, 31634901, 73814769, 221444307]

約数ペア:

[(1, 221444307), (3, 73814769), (7, 31634901), (9, 24604923), (21, 10544967), (27, 8201641), (47, 4711581), (63, 3514989), (97, 2282931), (141, 1570527), (189, 1171663), (257, 861651), (291, 760977), (329, 673083), (423, 523509), (679, 326133), (771, 287217), (873, 253659), (987, 224361), (1269, 174503), (1799, 123093), (2037, 108711), (2313, 95739), (2619, 84553), (2961, 74787), (4559, 48573), (5397, 41031), (6111, 36237), (6939, 31913), (8883, 24929), (12079, 18333), (13677, 16191)]