280448575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{251}}^1$

素因数の和:528

約数の個数: 48

約数和(自身を含む): 404974080

約数和(自身を除く): 124525505

約数列:

[1, 5, 11, 17, 25, 55, 85, 187, 239, 251, 275, 425, 935, 1195, 1255, 2629, 2761, 4063, 4267, 4675, 5975, 6275, 13145, 13805, 20315, 21335, 44693, 46937, 59989, 65725, 69025, 101575, 106675, 223465, 234685, 299945, 659879, 1019813, 1117325, 1173425, 1499725, 3299395, 5099065, 11217943, 16496975, 25495325, 56089715, 280448575]

約数ペア:

[(1, 280448575), (5, 56089715), (11, 25495325), (17, 16496975), (25, 11217943), (55, 5099065), (85, 3299395), (187, 1499725), (239, 1173425), (251, 1117325), (275, 1019813), (425, 659879), (935, 299945), (1195, 234685), (1255, 223465), (2629, 106675), (2761, 101575), (4063, 69025), (4267, 65725), (4675, 59989), (5975, 46937), (6275, 44693), (13145, 21335), (13805, 20315)]