21730425

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 37914240

約数和(自身を除く): 16183815

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 97, 103, 145, 291, 309, 435, 485, 515, 725, 1455, 1545, 2175, 2425, 2575, 2813, 2987, 7275, 7725, 8439, 8961, 9991, 14065, 14935, 29973, 42195, 44805, 49955, 70325, 74675, 149865, 210975, 224025, 249775, 289739, 749325, 869217, 1448695, 4346085, 7243475, 21730425]

約数ペア:

[(1, 21730425), (3, 7243475), (5, 4346085), (15, 1448695), (25, 869217), (29, 749325), (75, 289739), (87, 249775), (97, 224025), (103, 210975), (145, 149865), (291, 74675), (309, 70325), (435, 49955), (485, 44805), (515, 42195), (725, 29973), (1455, 14935), (1545, 14065), (2175, 9991), (2425, 8961), (2575, 8439), (2813, 7725), (2987, 7275)]