20198045

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{4339}}^1$

素因数の和:4377

約数の個数: 24

約数和(自身を含む): 29685600

約数和(自身を除く): 9487555

約数列:

[1, 5, 7, 19, 35, 49, 95, 133, 245, 665, 931, 4339, 4655, 21695, 30373, 82441, 151865, 212611, 412205, 577087, 1063055, 2885435, 4039609, 20198045]

約数ペア:

[(1, 20198045), (5, 4039609), (7, 2885435), (19, 1063055), (35, 577087), (49, 412205), (95, 212611), (133, 151865), (245, 82441), (665, 30373), (931, 21695), (4339, 4655)]