20828955

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1217}}^1$

素因数の和:1395

約数の個数: 32

約数和(自身を含む): 38352384

約数和(自身を除く): 17523429

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 163, 489, 815, 1141, 1217, 2445, 3423, 3651, 5705, 6085, 8519, 17115, 18255, 25557, 42595, 127785, 198371, 595113, 991855, 1388597, 2975565, 4165791, 6942985, 20828955]

約数ペア:

[(1, 20828955), (3, 6942985), (5, 4165791), (7, 2975565), (15, 1388597), (21, 991855), (35, 595113), (105, 198371), (163, 127785), (489, 42595), (815, 25557), (1141, 18255), (1217, 17115), (2445, 8519), (3423, 6085), (3651, 5705)]