128763999

素因数分解:

$3^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{647}}^1$

素因数の和:688

約数の個数: 64

約数和(自身を含む): 238049280

約数和(自身を除く): 109285281

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 243, 273, 351, 567, 647, 729, 819, 1053, 1701, 1941, 2187, 2457, 3159, 4529, 5103, 5823, 7371, 8411, 9477, 13587, 15309, 17469, 22113, 25233, 28431, 40761, 52407, 58877, 66339, 75699, 122283, 157221, 176631, 199017, 227097, 366849, 471663, 529893, 681291, 1100547, 1414989, 1589679, 2043873, 3301641, 4769037, 6131619, 9904923, 14307111, 18394857, 42921333, 128763999]

約数ペア:

[(1, 128763999), (3, 42921333), (7, 18394857), (9, 14307111), (13, 9904923), (21, 6131619), (27, 4769037), (39, 3301641), (63, 2043873), (81, 1589679), (91, 1414989), (117, 1100547), (189, 681291), (243, 529893), (273, 471663), (351, 366849), (567, 227097), (647, 199017), (729, 176631), (819, 157221), (1053, 122283), (1701, 75699), (1941, 66339), (2187, 58877), (2457, 52407), (3159, 40761), (4529, 28431), (5103, 25233), (5823, 22113), (7371, 17469), (8411, 15309), (9477, 13587)]