28861965

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{293}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 55036800

約数和(自身を除く): 26174835

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 199, 293, 495, 597, 879, 995, 1465, 1791, 2189, 2637, 2985, 3223, 4395, 6567, 8955, 9669, 10945, 13185, 16115, 19701, 29007, 32835, 48345, 58307, 98505, 145035, 174921, 291535, 524763, 641377, 874605, 1924131, 2623815, 3206885, 5772393, 9620655, 28861965]

約数ペア:

[(1, 28861965), (3, 9620655), (5, 5772393), (9, 3206885), (11, 2623815), (15, 1924131), (33, 874605), (45, 641377), (55, 524763), (99, 291535), (165, 174921), (199, 145035), (293, 98505), (495, 58307), (597, 48345), (879, 32835), (995, 29007), (1465, 19701), (1791, 16115), (2189, 13185), (2637, 10945), (2985, 9669), (3223, 8955), (4395, 6567)]