16839921

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{21673}}^1$

素因数の和:21720

約数の個数: 16

約数和(自身を含む): 26355584

約数和(自身を除く): 9515663

約数列:

[1, 3, 7, 21, 37, 111, 259, 777, 21673, 65019, 151711, 455133, 801901, 2405703, 5613307, 16839921]

約数ペア:

[(1, 16839921), (3, 5613307), (7, 2405703), (21, 801901), (37, 455133), (111, 151711), (259, 65019), (777, 21673)]