21082271

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{509}}^1$

素因数の和:674

約数の個数: 16

約数和(自身を含む): 24790080

約数和(自身を除く): 3707809

約数列:

[1, 7, 61, 97, 427, 509, 679, 3563, 5917, 31049, 41419, 49373, 217343, 345611, 3011753, 21082271]

約数ペア:

[(1, 21082271), (7, 3011753), (61, 345611), (97, 217343), (427, 49373), (509, 41419), (679, 31049), (3563, 5917)]