20109201

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{499}}^1$

素因数の和:629

約数の個数: 32

約数和(自身を含む): 32640000

約数和(自身を除く): 12530799

約数列:

[1, 3, 7, 19, 21, 57, 101, 133, 303, 399, 499, 707, 1497, 1919, 2121, 3493, 5757, 9481, 10479, 13433, 28443, 40299, 50399, 66367, 151197, 199101, 352793, 957581, 1058379, 2872743, 6703067, 20109201]

約数ペア:

[(1, 20109201), (3, 6703067), (7, 2872743), (19, 1058379), (21, 957581), (57, 352793), (101, 199101), (133, 151197), (303, 66367), (399, 50399), (499, 40299), (707, 28443), (1497, 13433), (1919, 10479), (2121, 9481), (3493, 5757)]