20889897

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{137}}^2$

素因数の和:337

約数の個数: 24

約数和(自身を含む): 32671296

約数和(自身を除く): 11781399

約数列:

[1, 3, 7, 21, 53, 137, 159, 371, 411, 959, 1113, 2877, 7261, 18769, 21783, 50827, 56307, 131383, 152481, 394149, 994757, 2984271, 6963299, 20889897]

約数ペア:

[(1, 20889897), (3, 6963299), (7, 2984271), (21, 994757), (53, 394149), (137, 152481), (159, 131383), (371, 56307), (411, 50827), (959, 21783), (1113, 18769), (2877, 7261)]