20401719

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{5393}}^1$

素因数の和:5506

約数の個数: 16

約数和(自身を含む): 29602272

約数和(自身を除く): 9200553

約数列:

[1, 3, 13, 39, 97, 291, 1261, 3783, 5393, 16179, 70109, 210327, 523121, 1569363, 6800573, 20401719]

約数ペア:

[(1, 20401719), (3, 6800573), (13, 1569363), (39, 523121), (97, 210327), (291, 70109), (1261, 16179), (3783, 5393)]