20922021

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{4219}}^1$

素因数の和:4273

約数の個数: 24

約数和(自身を含む): 32916000

約数和(自身を除く): 11993979

約数列:

[1, 3, 9, 19, 29, 57, 87, 171, 261, 551, 1653, 4219, 4959, 12657, 37971, 80161, 122351, 240483, 367053, 721449, 1101159, 2324669, 6974007, 20922021]

約数ペア:

[(1, 20922021), (3, 6974007), (9, 2324669), (19, 1101159), (29, 721449), (57, 367053), (87, 240483), (171, 122351), (261, 80161), (551, 37971), (1653, 12657), (4219, 4959)]