18787923

素因数分解:

$3^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1291}}^1$

素因数の和:1325

約数の個数: 48

約数和(自身を含む): 35349120

約数和(自身を除く): 16561197

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 49, 63, 77, 99, 147, 189, 231, 297, 441, 539, 693, 1291, 1323, 1617, 2079, 3873, 4851, 9037, 11619, 14201, 14553, 27111, 34857, 42603, 63259, 81333, 99407, 127809, 189777, 243999, 298221, 383427, 569331, 695849, 894663, 1707993, 2087547, 2683989, 6262641, 18787923]

約数ペア:

[(1, 18787923), (3, 6262641), (7, 2683989), (9, 2087547), (11, 1707993), (21, 894663), (27, 695849), (33, 569331), (49, 383427), (63, 298221), (77, 243999), (99, 189777), (147, 127809), (189, 99407), (231, 81333), (297, 63259), (441, 42603), (539, 34857), (693, 27111), (1291, 14553), (1323, 14201), (1617, 11619), (2079, 9037), (3873, 4851)]