20402900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{29147}}^1$

素因数の和:29168

約数の個数: 36

約数和(自身を含む): 50600928

約数和(自身を除く): 30198028

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 700, 29147, 58294, 116588, 145735, 204029, 291470, 408058, 582940, 728675, 816116, 1020145, 1457350, 2040290, 2914700, 4080580, 5100725, 10201450, 20402900]

約数ペア:

[(1, 20402900), (2, 10201450), (4, 5100725), (5, 4080580), (7, 2914700), (10, 2040290), (14, 1457350), (20, 1020145), (25, 816116), (28, 728675), (35, 582940), (50, 408058), (70, 291470), (100, 204029), (140, 145735), (175, 116588), (350, 58294), (700, 29147)]