81474498

素因数分解:

$2^1\times 3^8\times 7^1\times {\mathrm{887}}^1$

素因数の和:920

約数の個数: 72

約数和(自身を含む): 209731392

約数和(自身を除く): 128256894

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 243, 378, 486, 567, 729, 887, 1134, 1458, 1701, 1774, 2187, 2661, 3402, 4374, 5103, 5322, 6209, 6561, 7983, 10206, 12418, 13122, 15309, 15966, 18627, 23949, 30618, 37254, 45927, 47898, 55881, 71847, 91854, 111762, 143694, 167643, 215541, 335286, 431082, 502929, 646623, 1005858, 1293246, 1508787, 1939869, 3017574, 3879738, 4526361, 5819607, 9052722, 11639214, 13579083, 27158166, 40737249, 81474498]

約数ペア:

[(1, 81474498), (2, 40737249), (3, 27158166), (6, 13579083), (7, 11639214), (9, 9052722), (14, 5819607), (18, 4526361), (21, 3879738), (27, 3017574), (42, 1939869), (54, 1508787), (63, 1293246), (81, 1005858), (126, 646623), (162, 502929), (189, 431082), (243, 335286), (378, 215541), (486, 167643), (567, 143694), (729, 111762), (887, 91854), (1134, 71847), (1458, 55881), (1701, 47898), (1774, 45927), (2187, 37254), (2661, 30618), (3402, 23949), (4374, 18627), (5103, 15966), (5322, 15309), (6209, 13122), (6561, 12418), (7983, 10206)]