21092331

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{311}}^1$

素因数の和:411

約数の個数: 32

約数和(自身を含む): 31868928

約数和(自身を除く): 10776597

約数列:

[1, 3, 13, 37, 39, 47, 111, 141, 311, 481, 611, 933, 1443, 1739, 1833, 4043, 5217, 11507, 12129, 14617, 22607, 34521, 43851, 67821, 149591, 190021, 448773, 540829, 570063, 1622487, 7030777, 21092331]

約数ペア:

[(1, 21092331), (3, 7030777), (13, 1622487), (37, 570063), (39, 540829), (47, 448773), (111, 190021), (141, 149591), (311, 67821), (481, 43851), (611, 34521), (933, 22607), (1443, 14617), (1739, 12129), (1833, 11507), (4043, 5217)]