21314825

素因数分解:

$5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{3929}}^1$

素因数の和:3977

約数の個数: 24

約数和(自身を含む): 31188480

約数和(自身を除く): 9873655

約数列:

[1, 5, 7, 25, 31, 35, 155, 175, 217, 775, 1085, 3929, 5425, 19645, 27503, 98225, 121799, 137515, 608995, 687575, 852593, 3044975, 4262965, 21314825]

約数ペア:

[(1, 21314825), (5, 4262965), (7, 3044975), (25, 852593), (31, 687575), (35, 608995), (155, 137515), (175, 121799), (217, 98225), (775, 27503), (1085, 19645), (3929, 5425)]