20969439141

素因数分解:

$3^1\times 7^1\times {\mathrm{12703}}^1\times {\mathrm{78607}}^1$

素因数の和:91320

約数の個数: 16

約数和(自身を含む): 31956353024

約数和(自身を除く): 10986913883

約数列:

[1, 3, 7, 21, 12703, 38109, 78607, 88921, 235821, 266763, 550249, 1650747, 998544721, 2995634163, 6989813047, 20969439141]

約数ペア:

[(1, 20969439141), (3, 6989813047), (7, 2995634163), (21, 998544721), (12703, 1650747), (38109, 550249), (78607, 266763), (88921, 235821)]