21519549

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{563}}^1$

素因数の和:737

約数の個数: 24

約数和(自身を含む): 32378112

約数和(自身を除く): 10858563

約数列:

[1, 3, 9, 31, 93, 137, 279, 411, 563, 1233, 1689, 4247, 5067, 12741, 17453, 38223, 52359, 77131, 157077, 231393, 694179, 2391061, 7173183, 21519549]

約数ペア:

[(1, 21519549), (3, 7173183), (9, 2391061), (31, 694179), (93, 231393), (137, 157077), (279, 77131), (411, 52359), (563, 38223), (1233, 17453), (1689, 12741), (4247, 5067)]