21000243

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{12007}}^1$

素因数の和:12074

約数の個数: 16

約数和(自身を含む): 31124736

約数和(自身を除く): 10124493

約数列:

[1, 3, 11, 33, 53, 159, 583, 1749, 12007, 36021, 132077, 396231, 636371, 1909113, 7000081, 21000243]

約数ペア:

[(1, 21000243), (3, 7000081), (11, 1909113), (33, 636371), (53, 396231), (159, 132077), (583, 36021), (1749, 12007)]