20098820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20509}}^1$

素因数の和:20532

約数の個数: 36

約数和(自身を含む): 49100940

約数和(自身を除く): 29002120

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20509, 41018, 82036, 102545, 143563, 205090, 287126, 410180, 574252, 717815, 1004941, 1435630, 2009882, 2871260, 4019764, 5024705, 10049410, 20098820]

約数ペア:

[(1, 20098820), (2, 10049410), (4, 5024705), (5, 4019764), (7, 2871260), (10, 2009882), (14, 1435630), (20, 1004941), (28, 717815), (35, 574252), (49, 410180), (70, 287126), (98, 205090), (140, 143563), (196, 102545), (245, 82036), (490, 41018), (980, 20509)]