21695375

素因数分解:

$5^3\times {\mathrm{13}}^3\times {\mathrm{79}}^1$

素因数の和:133

約数の個数: 32

約数和(自身を含む): 29702400

約数和(自身を除く): 8007025

約数列:

[1, 5, 13, 25, 65, 79, 125, 169, 325, 395, 845, 1027, 1625, 1975, 2197, 4225, 5135, 9875, 10985, 13351, 21125, 25675, 54925, 66755, 128375, 173563, 274625, 333775, 867815, 1668875, 4339075, 21695375]

約数ペア:

[(1, 21695375), (5, 4339075), (13, 1668875), (25, 867815), (65, 333775), (79, 274625), (125, 173563), (169, 128375), (325, 66755), (395, 54925), (845, 25675), (1027, 21125), (1625, 13351), (1975, 10985), (2197, 9875), (4225, 5135)]