21020678

素因数分解:

$2^1\times 7^1\times {\mathrm{461}}^1\times {\mathrm{3257}}^1$

素因数の和:3727

約数の個数: 16

約数和(自身を含む): 36124704

約数和(自身を除く): 15104026

約数列:

[1, 2, 7, 14, 461, 922, 3227, 3257, 6454, 6514, 22799, 45598, 1501477, 3002954, 10510339, 21020678]

約数ペア:

[(1, 21020678), (2, 10510339), (7, 3002954), (14, 1501477), (461, 45598), (922, 22799), (3227, 6514), (3257, 6454)]