20481909

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{271}}^1$

素因数の和:401

約数の個数: 32

約数和(自身を含む): 32378880

約数和(自身を除く): 11896971

約数列:

[1, 3, 7, 21, 59, 61, 177, 183, 271, 413, 427, 813, 1239, 1281, 1897, 3599, 5691, 10797, 15989, 16531, 25193, 47967, 49593, 75579, 111923, 115717, 335769, 347151, 975329, 2925987, 6827303, 20481909]

約数ペア:

[(1, 20481909), (3, 6827303), (7, 2925987), (21, 975329), (59, 347151), (61, 335769), (177, 115717), (183, 111923), (271, 75579), (413, 49593), (427, 47967), (813, 25193), (1239, 16531), (1281, 15989), (1897, 10797), (3599, 5691)]