20021991

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{2903}}^1$

素因数の和:2947

約数の個数: 24

約数和(自身を含む): 30898560

約数和(自身を除く): 10876569

約数列:

[1, 3, 11, 19, 33, 57, 121, 209, 363, 627, 2299, 2903, 6897, 8709, 31933, 55157, 95799, 165471, 351263, 606727, 1053789, 1820181, 6673997, 20021991]

約数ペア:

[(1, 20021991), (3, 6673997), (11, 1820181), (19, 1053789), (33, 606727), (57, 351263), (121, 165471), (209, 95799), (363, 55157), (627, 31933), (2299, 8709), (2903, 6897)]