20578075

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6917}}^1$

素因数の和:6951

約数の個数: 24

約数和(自身を含む): 30881952

約数和(自身を除く): 10303877

約数列:

[1, 5, 7, 17, 25, 35, 85, 119, 175, 425, 595, 2975, 6917, 34585, 48419, 117589, 172925, 242095, 587945, 823123, 1210475, 2939725, 4115615, 20578075]

約数ペア:

[(1, 20578075), (5, 4115615), (7, 2939725), (17, 1210475), (25, 823123), (35, 587945), (85, 242095), (119, 172925), (175, 117589), (425, 48419), (595, 34585), (2975, 6917)]