21485511

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{1453}}^1$

素因数の和:1543

約数の個数: 24

約数和(自身を含む): 32662656

約数和(自身を除く): 11177145

約数列:

[1, 3, 9, 31, 53, 93, 159, 279, 477, 1453, 1643, 4359, 4929, 13077, 14787, 45043, 77009, 135129, 231027, 405387, 693081, 2387279, 7161837, 21485511]

約数ペア:

[(1, 21485511), (3, 7161837), (9, 2387279), (31, 693081), (53, 405387), (93, 231027), (159, 135129), (279, 77009), (477, 45043), (1453, 14787), (1643, 13077), (4359, 4929)]