19880511

素因数分解:

$3^1\times 7^1\times {\mathrm{443}}^1\times {\mathrm{2137}}^1$

素因数の和:2590

約数の個数: 16

約数和(自身を含む): 30376704

約数和(自身を除く): 10496193

約数列:

[1, 3, 7, 21, 443, 1329, 2137, 3101, 6411, 9303, 14959, 44877, 946691, 2840073, 6626837, 19880511]

約数ペア:

[(1, 19880511), (3, 6626837), (7, 2840073), (21, 946691), (443, 44877), (1329, 14959), (2137, 9303), (3101, 6411)]