388492775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{229}}^1$

素因数の和:480

約数の個数: 48

約数和(自身を含む): 547584000

約数和(自身を除く): 159091225

約数列:

[1, 5, 11, 25, 31, 55, 155, 199, 229, 275, 341, 775, 995, 1145, 1705, 2189, 2519, 4975, 5725, 6169, 7099, 8525, 10945, 12595, 30845, 35495, 45571, 54725, 62975, 67859, 78089, 154225, 177475, 227855, 339295, 390445, 501281, 1139275, 1412701, 1696475, 1952225, 2506405, 7063505, 12532025, 15539711, 35317525, 77698555, 388492775]

約数ペア:

[(1, 388492775), (5, 77698555), (11, 35317525), (25, 15539711), (31, 12532025), (55, 7063505), (155, 2506405), (199, 1952225), (229, 1696475), (275, 1412701), (341, 1139275), (775, 501281), (995, 390445), (1145, 339295), (1705, 227855), (2189, 177475), (2519, 154225), (4975, 78089), (5725, 67859), (6169, 62975), (7099, 54725), (8525, 45571), (10945, 35495), (12595, 30845)]