20820723

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{521}}^1$

素因数の和:715

約数の個数: 32

約数和(自身を含む): 34877952

約数和(自身を除く): 14057229

約数列:

[1, 3, 7, 11, 21, 33, 77, 173, 231, 519, 521, 1211, 1563, 1903, 3633, 3647, 5709, 5731, 10941, 13321, 17193, 39963, 40117, 90133, 120351, 270399, 630931, 991463, 1892793, 2974389, 6940241, 20820723]

約数ペア:

[(1, 20820723), (3, 6940241), (7, 2974389), (11, 1892793), (21, 991463), (33, 630931), (77, 270399), (173, 120351), (231, 90133), (519, 40117), (521, 39963), (1211, 17193), (1563, 13321), (1903, 10941), (3633, 5731), (3647, 5709)]