20997746

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{2311}}^1$

素因数の和:2390

約数の個数: 32

約数和(自身を含む): 39951360

約数和(自身を除く): 18953614

約数列:

[1, 2, 7, 11, 14, 22, 59, 77, 118, 154, 413, 649, 826, 1298, 2311, 4543, 4622, 9086, 16177, 25421, 32354, 50842, 136349, 177947, 272698, 355894, 954443, 1499839, 1908886, 2999678, 10498873, 20997746]

約数ペア:

[(1, 20997746), (2, 10498873), (7, 2999678), (11, 1908886), (14, 1499839), (22, 954443), (59, 355894), (77, 272698), (118, 177947), (154, 136349), (413, 50842), (649, 32354), (826, 25421), (1298, 16177), (2311, 9086), (4543, 4622)]