18881478

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{239}}^1$

素因数の和:287

約数の個数: 128

約数和(自身を含む): 55296000

約数和(自身を除く): 36414522

約数列:

[1, 2, 3, 6, 7, 9, 11, 14, 18, 19, 21, 22, 27, 33, 38, 42, 54, 57, 63, 66, 77, 99, 114, 126, 133, 154, 171, 189, 198, 209, 231, 239, 266, 297, 342, 378, 399, 418, 462, 478, 513, 594, 627, 693, 717, 798, 1026, 1197, 1254, 1386, 1434, 1463, 1673, 1881, 2079, 2151, 2394, 2629, 2926, 3346, 3591, 3762, 4158, 4302, 4389, 4541, 5019, 5258, 5643, 6453, 7182, 7887, 8778, 9082, 10038, 11286, 12906, 13167, 13623, 15057, 15774, 18403, 23661, 26334, 27246, 30114, 31787, 36806, 39501, 40869, 45171, 47322, 49951, 55209, 63574, 70983, 79002, 81738, 90342, 95361, 99902, 110418, 122607, 141966, 149853, 165627, 190722, 245214, 286083, 299706, 331254, 349657, 449559, 496881, 572166, 699314, 858249, 899118, 993762, 1048971, 1348677, 1716498, 2097942, 2697354, 3146913, 6293826, 9440739, 18881478]

約数ペア:

[(1, 18881478), (2, 9440739), (3, 6293826), (6, 3146913), (7, 2697354), (9, 2097942), (11, 1716498), (14, 1348677), (18, 1048971), (19, 993762), (21, 899118), (22, 858249), (27, 699314), (33, 572166), (38, 496881), (42, 449559), (54, 349657), (57, 331254), (63, 299706), (66, 286083), (77, 245214), (99, 190722), (114, 165627), (126, 149853), (133, 141966), (154, 122607), (171, 110418), (189, 99902), (198, 95361), (209, 90342), (231, 81738), (239, 79002), (266, 70983), (297, 63574), (342, 55209), (378, 49951), (399, 47322), (418, 45171), (462, 40869), (478, 39501), (513, 36806), (594, 31787), (627, 30114), (693, 27246), (717, 26334), (798, 23661), (1026, 18403), (1197, 15774), (1254, 15057), (1386, 13623), (1434, 13167), (1463, 12906), (1673, 11286), (1881, 10038), (2079, 9082), (2151, 8778), (2394, 7887), (2629, 7182), (2926, 6453), (3346, 5643), (3591, 5258), (3762, 5019), (4158, 4541), (4302, 4389)]