18111856

素因数分解:

$2^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:206

約数の個数: 80

約数和(自身を含む): 42854400

約数和(自身を除く): 24742544

約数列:

[1, 2, 4, 7, 8, 14, 16, 23, 28, 46, 56, 79, 89, 92, 112, 158, 161, 178, 184, 316, 322, 356, 368, 553, 623, 632, 644, 712, 1106, 1246, 1264, 1288, 1424, 1817, 2047, 2212, 2492, 2576, 3634, 4094, 4424, 4984, 7031, 7268, 8188, 8848, 9968, 12719, 14062, 14329, 14536, 16376, 25438, 28124, 28658, 29072, 32752, 49217, 50876, 56248, 57316, 98434, 101752, 112496, 114632, 161713, 196868, 203504, 229264, 323426, 393736, 646852, 787472, 1131991, 1293704, 2263982, 2587408, 4527964, 9055928, 18111856]

約数ペア:

[(1, 18111856), (2, 9055928), (4, 4527964), (7, 2587408), (8, 2263982), (14, 1293704), (16, 1131991), (23, 787472), (28, 646852), (46, 393736), (56, 323426), (79, 229264), (89, 203504), (92, 196868), (112, 161713), (158, 114632), (161, 112496), (178, 101752), (184, 98434), (316, 57316), (322, 56248), (356, 50876), (368, 49217), (553, 32752), (623, 29072), (632, 28658), (644, 28124), (712, 25438), (1106, 16376), (1246, 14536), (1264, 14329), (1288, 14062), (1424, 12719), (1817, 9968), (2047, 8848), (2212, 8188), (2492, 7268), (2576, 7031), (3634, 4984), (4094, 4424)]