21516573

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{37}}^2$

素因数の和:134

約数の個数: 36

約数和(自身を含む): 32957568

約数和(自身を除く): 11440995

約数列:

[1, 3, 13, 31, 37, 39, 93, 111, 169, 403, 481, 507, 1147, 1209, 1369, 1443, 3441, 4107, 5239, 6253, 14911, 15717, 17797, 18759, 42439, 44733, 53391, 127317, 193843, 231361, 551707, 581529, 694083, 1655121, 7172191, 21516573]

約数ペア:

[(1, 21516573), (3, 7172191), (13, 1655121), (31, 694083), (37, 581529), (39, 551707), (93, 231361), (111, 193843), (169, 127317), (403, 53391), (481, 44733), (507, 42439), (1147, 18759), (1209, 17797), (1369, 15717), (1443, 14911), (3441, 6253), (4107, 5239)]