18538317

素因数分解:

$3^2\times 7^2\times {\mathrm{127}}^1\times {\mathrm{331}}^1$

素因数の和:478

約数の個数: 36

約数和(自身を含む): 31489536

約数和(自身を除く): 12951219

約数列:

[1, 3, 7, 9, 21, 49, 63, 127, 147, 331, 381, 441, 889, 993, 1143, 2317, 2667, 2979, 6223, 6951, 8001, 16219, 18669, 20853, 42037, 48657, 56007, 126111, 145971, 294259, 378333, 882777, 2059813, 2648331, 6179439, 18538317]

約数ペア:

[(1, 18538317), (3, 6179439), (7, 2648331), (9, 2059813), (21, 882777), (49, 378333), (63, 294259), (127, 145971), (147, 126111), (331, 56007), (381, 48657), (441, 42037), (889, 20853), (993, 18669), (1143, 16219), (2317, 8001), (2667, 6951), (2979, 6223)]