21489789

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1\times {\mathrm{743}}^1$

素因数の和:1088

約数の個数: 16

約数和(自身を含む): 29712384

約数和(自身を除く): 8222595

約数列:

[1, 3, 31, 93, 311, 743, 933, 2229, 9641, 23033, 28923, 69099, 231073, 693219, 7163263, 21489789]

約数ペア:

[(1, 21489789), (3, 7163263), (31, 693219), (93, 231073), (311, 69099), (743, 28923), (933, 23033), (2229, 9641)]