20889908

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{12959}}^1$

素因数の和:13007

約数の個数: 24

約数和(自身を含む): 40642560

約数和(自身を除く): 19752652

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 12959, 25918, 51836, 168467, 336934, 401729, 673868, 803458, 1606916, 5222477, 10444954, 20889908]

約数ペア:

[(1, 20889908), (2, 10444954), (4, 5222477), (13, 1606916), (26, 803458), (31, 673868), (52, 401729), (62, 336934), (124, 168467), (403, 51836), (806, 25918), (1612, 12959)]