18161738275

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{179}}^1\times {\mathrm{1471}}^1$

素因数の和:1780

約数の個数: 48

約数和(自身を含む): 23655628800

約数和(自身を除く): 5493890525

約数列:

[1, 5, 25, 31, 89, 155, 179, 445, 775, 895, 1471, 2225, 2759, 4475, 5549, 7355, 13795, 15931, 27745, 36775, 45601, 68975, 79655, 130919, 138725, 228005, 263309, 398275, 493861, 654595, 1140025, 1316545, 2469305, 3272975, 4058489, 6582725, 8162579, 12346525, 20292445, 23434501, 40812895, 101462225, 117172505, 204064475, 585862525, 726469531, 3632347655, 18161738275]

約数ペア:

[(1, 18161738275), (5, 3632347655), (25, 726469531), (31, 585862525), (89, 204064475), (155, 117172505), (179, 101462225), (445, 40812895), (775, 23434501), (895, 20292445), (1471, 12346525), (2225, 8162579), (2759, 6582725), (4475, 4058489), (5549, 3272975), (7355, 2469305), (13795, 1316545), (15931, 1140025), (27745, 654595), (36775, 493861), (45601, 398275), (68975, 263309), (79655, 228005), (130919, 138725)]