18719239

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{101}}^1$

素因数の和:231

約数の個数: 32

約数和(自身を含む): 24675840

約数和(自身を除く): 5956601

約数列:

[1, 7, 11, 29, 77, 83, 101, 203, 319, 581, 707, 913, 1111, 2233, 2407, 2929, 6391, 7777, 8383, 16849, 20503, 26477, 32219, 58681, 92213, 185339, 225533, 243107, 645491, 1701749, 2674177, 18719239]

約数ペア:

[(1, 18719239), (7, 2674177), (11, 1701749), (29, 645491), (77, 243107), (83, 225533), (101, 185339), (203, 92213), (319, 58681), (581, 32219), (707, 26477), (913, 20503), (1111, 16849), (2233, 8383), (2407, 7777), (2929, 6391)]