21040779

素因数分解:

$3^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1\times {\mathrm{571}}^1$

素因数の和:818

約数の個数: 16

約数和(自身を含む): 28664064

約数和(自身を除く): 7623285

約数列:

[1, 3, 71, 173, 213, 519, 571, 1713, 12283, 36849, 40541, 98783, 121623, 296349, 7013593, 21040779]

約数ペア:

[(1, 21040779), (3, 7013593), (71, 296349), (173, 121623), (213, 98783), (519, 40541), (571, 36849), (1713, 12283)]