21618828

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{709}}^1$

素因数の和:748

約数の個数: 108

約数和(自身を含む): 68745040

約数和(自身を除く): 47126212

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 33, 36, 42, 44, 63, 66, 77, 84, 99, 121, 126, 132, 154, 198, 231, 242, 252, 308, 363, 396, 462, 484, 693, 709, 726, 847, 924, 1089, 1386, 1418, 1452, 1694, 2127, 2178, 2541, 2772, 2836, 3388, 4254, 4356, 4963, 5082, 6381, 7623, 7799, 8508, 9926, 10164, 12762, 14889, 15246, 15598, 19852, 23397, 25524, 29778, 30492, 31196, 44667, 46794, 54593, 59556, 70191, 85789, 89334, 93588, 109186, 140382, 163779, 171578, 178668, 218372, 257367, 280764, 327558, 343156, 491337, 514734, 600523, 655116, 772101, 982674, 1029468, 1201046, 1544202, 1801569, 1965348, 2402092, 3088404, 3603138, 5404707, 7206276, 10809414, 21618828]

約数ペア:

[(1, 21618828), (2, 10809414), (3, 7206276), (4, 5404707), (6, 3603138), (7, 3088404), (9, 2402092), (11, 1965348), (12, 1801569), (14, 1544202), (18, 1201046), (21, 1029468), (22, 982674), (28, 772101), (33, 655116), (36, 600523), (42, 514734), (44, 491337), (63, 343156), (66, 327558), (77, 280764), (84, 257367), (99, 218372), (121, 178668), (126, 171578), (132, 163779), (154, 140382), (198, 109186), (231, 93588), (242, 89334), (252, 85789), (308, 70191), (363, 59556), (396, 54593), (462, 46794), (484, 44667), (693, 31196), (709, 30492), (726, 29778), (847, 25524), (924, 23397), (1089, 19852), (1386, 15598), (1418, 15246), (1452, 14889), (1694, 12762), (2127, 10164), (2178, 9926), (2541, 8508), (2772, 7799), (2836, 7623), (3388, 6381), (4254, 5082), (4356, 4963)]