20338325

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{163}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 31236096

約数和(自身を除く): 10897771

約数列:

[1, 5, 7, 23, 25, 31, 35, 115, 155, 161, 163, 175, 217, 575, 713, 775, 805, 815, 1085, 1141, 3565, 3749, 4025, 4075, 4991, 5053, 5425, 5705, 17825, 18745, 24955, 25265, 26243, 28525, 35371, 93725, 116219, 124775, 126325, 131215, 176855, 581095, 656075, 813533, 884275, 2905475, 4067665, 20338325]

約数ペア:

[(1, 20338325), (5, 4067665), (7, 2905475), (23, 884275), (25, 813533), (31, 656075), (35, 581095), (115, 176855), (155, 131215), (161, 126325), (163, 124775), (175, 116219), (217, 93725), (575, 35371), (713, 28525), (775, 26243), (805, 25265), (815, 24955), (1085, 18745), (1141, 17825), (3565, 5705), (3749, 5425), (4025, 5053), (4075, 4991)]