28809261

素因数分解:

$3^2\times {\mathrm{13}}^3\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:123

約数の個数: 48

約数和(自身を含む): 47523840

約数和(自身を除く): 18714579

約数列:

[1, 3, 9, 13, 31, 39, 47, 93, 117, 141, 169, 279, 403, 423, 507, 611, 1209, 1457, 1521, 1833, 2197, 3627, 4371, 5239, 5499, 6591, 7943, 13113, 15717, 18941, 19773, 23829, 47151, 56823, 68107, 71487, 103259, 170469, 204321, 246233, 309777, 612963, 738699, 929331, 2216097, 3201029, 9603087, 28809261]

約数ペア:

[(1, 28809261), (3, 9603087), (9, 3201029), (13, 2216097), (31, 929331), (39, 738699), (47, 612963), (93, 309777), (117, 246233), (141, 204321), (169, 170469), (279, 103259), (403, 71487), (423, 68107), (507, 56823), (611, 47151), (1209, 23829), (1457, 19773), (1521, 18941), (1833, 15717), (2197, 13113), (3627, 7943), (4371, 6591), (5239, 5499)]