17680621

素因数分解:

$7^3\times {\mathrm{19}}^1\times {\mathrm{2713}}^1$

素因数の和:2753

約数の個数: 16

約数和(自身を含む): 21712000

約数和(自身を除く): 4031379

約数列:

[1, 7, 19, 49, 133, 343, 931, 2713, 6517, 18991, 51547, 132937, 360829, 930559, 2525803, 17680621]

約数ペア:

[(1, 17680621), (7, 2525803), (19, 930559), (49, 360829), (133, 132937), (343, 51547), (931, 18991), (2713, 6517)]