21190243886

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3217}}^1\times {\mathrm{24763}}^1$

素因数の和:28008

約数の個数: 32

約数和(自身を含む): 38251464960

約数和(自身を除く): 17061221074

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 3217, 6434, 22519, 24763, 45038, 49526, 61123, 122246, 173341, 346682, 427861, 470497, 855722, 940994, 3293479, 6586958, 79662571, 159325142, 557637997, 1115275994, 1513588849, 3027177698, 10595121943, 21190243886]

約数ペア:

[(1, 21190243886), (2, 10595121943), (7, 3027177698), (14, 1513588849), (19, 1115275994), (38, 557637997), (133, 159325142), (266, 79662571), (3217, 6586958), (6434, 3293479), (22519, 940994), (24763, 855722), (45038, 470497), (49526, 427861), (61123, 346682), (122246, 173341)]