21499457

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{3257}}^1$

素因数の和:3328

約数の個数: 16

約数和(自身を含む): 26272512

約数和(自身を除く): 4773055

約数列:

[1, 7, 23, 41, 161, 287, 943, 3257, 6601, 22799, 74911, 133537, 524377, 934759, 3071351, 21499457]

約数ペア:

[(1, 21499457), (7, 3071351), (23, 934759), (41, 524377), (161, 133537), (287, 74911), (943, 22799), (3257, 6601)]