9991121

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{743}}^1$

素因数の和:880

約数の個数: 16

約数和(自身を含む): 12213504

約数和(自身を除く): 2222383

約数列:

[1, 7, 17, 113, 119, 743, 791, 1921, 5201, 12631, 13447, 83959, 88417, 587713, 1427303, 9991121]

約数ペア:

[(1, 9991121), (7, 1427303), (17, 587713), (113, 88417), (119, 83959), (743, 13447), (791, 12631), (1921, 5201)]