16991667

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^2\times {\mathrm{743}}^1$

素因数の和:781

約数の個数: 48

約数和(自身を含む): 31664640

約数和(自身を除く): 14672973

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 99, 121, 189, 231, 297, 363, 693, 743, 847, 1089, 2079, 2229, 2541, 3267, 5201, 6687, 7623, 8173, 15603, 20061, 22869, 24519, 46809, 57211, 73557, 89903, 140427, 171633, 220671, 269709, 514899, 629321, 809127, 1544697, 1887963, 2427381, 5663889, 16991667]

約数ペア:

[(1, 16991667), (3, 5663889), (7, 2427381), (9, 1887963), (11, 1544697), (21, 809127), (27, 629321), (33, 514899), (63, 269709), (77, 220671), (99, 171633), (121, 140427), (189, 89903), (231, 73557), (297, 57211), (363, 46809), (693, 24519), (743, 22869), (847, 20061), (1089, 15603), (2079, 8173), (2229, 7623), (2541, 6687), (3267, 5201)]