20653241

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{787}}^1$

素因数の和:980

約数の個数: 16

約数和(自身を含む): 24812544

約数和(自身を除く): 4159303

約数列:

[1, 7, 23, 161, 163, 787, 1141, 3749, 5509, 18101, 26243, 126707, 128281, 897967, 2950463, 20653241]

約数ペア:

[(1, 20653241), (7, 2950463), (23, 897967), (161, 128281), (163, 126707), (787, 26243), (1141, 18101), (3749, 5509)]