78718878

素因数分解:

$2^1\times 3^8\times 7^1\times {\mathrm{857}}^1$

素因数の和:890

約数の個数: 72

約数和(自身を含む): 202645872

約数和(自身を除く): 123926994

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, 857, 1134, 1458, 1701, 1714, 2187, 2571, 3402, 4374, 5103, 5142, 5999, 6561, 7713, 10206, 11998, 13122, 15309, 15426, 17997, 23139, 30618, 35994, 45927, 46278, 53991, 69417, 91854, 107982, 138834, 161973, 208251, 323946, 416502, 485919, 624753, 971838, 1249506, 1457757, 1874259, 2915514, 3748518, 4373271, 5622777, 8746542, 11245554, 13119813, 26239626, 39359439, 78718878]

約数ペア:

[(1, 78718878), (2, 39359439), (3, 26239626), (6, 13119813), (7, 11245554), (9, 8746542), (14, 5622777), (18, 4373271), (21, 3748518), (27, 2915514), (42, 1874259), (54, 1457757), (63, 1249506), (81, 971838), (126, 624753), (162, 485919), (189, 416502), (243, 323946), (378, 208251), (486, 161973), (567, 138834), (729, 107982), (857, 91854), (1134, 69417), (1458, 53991), (1701, 46278), (1714, 45927), (2187, 35994), (2571, 30618), (3402, 23139), (4374, 17997), (5103, 15426), (5142, 15309), (5999, 13122), (6561, 11998), (7713, 10206)]