21003669927

素因数分解:

$3^4\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{68909}}^1$

素因数の和:69045

約数の個数: 40

約数和(自身を含む): 32418571680

約数和(自身を除く): 11414901753

約数列:

[1, 3, 9, 27, 53, 71, 81, 159, 213, 477, 639, 1431, 1917, 3763, 4293, 5751, 11289, 33867, 68909, 101601, 206727, 304803, 620181, 1860543, 3652177, 4892539, 5581629, 10956531, 14677617, 32869593, 44032851, 98608779, 132098553, 259304567, 295826337, 396295659, 777913701, 2333741103, 7001223309, 21003669927]

約数ペア:

[(1, 21003669927), (3, 7001223309), (9, 2333741103), (27, 777913701), (53, 396295659), (71, 295826337), (81, 259304567), (159, 132098553), (213, 98608779), (477, 44032851), (639, 32869593), (1431, 14677617), (1917, 10956531), (3763, 5581629), (4293, 4892539), (5751, 3652177), (11289, 1860543), (33867, 620181), (68909, 304803), (101601, 206727)]