19897691

素因数分解:

${\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:167

約数の個数: 32

約数和(自身を含む): 24330240

約数和(自身を除く): 4432549

約数列:

[1, 11, 23, 31, 43, 59, 253, 341, 473, 649, 713, 989, 1333, 1357, 1829, 2537, 7843, 10879, 14663, 14927, 20119, 27907, 30659, 42067, 58351, 78647, 337249, 462737, 641861, 865117, 1808881, 19897691]

約数ペア:

[(1, 19897691), (11, 1808881), (23, 865117), (31, 641861), (43, 462737), (59, 337249), (253, 78647), (341, 58351), (473, 42067), (649, 30659), (713, 27907), (989, 20119), (1333, 14927), (1357, 14663), (1829, 10879), (2537, 7843)]