21305451

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{367}}^1\times {\mathrm{523}}^1$

素因数の和:930

約数の個数: 16

約数和(自身を含む): 29310464

約数和(自身を除く): 8005013

約数列:

[1, 3, 37, 111, 367, 523, 1101, 1569, 13579, 19351, 40737, 58053, 191941, 575823, 7101817, 21305451]

約数ペア:

[(1, 21305451), (3, 7101817), (37, 575823), (111, 191941), (367, 58053), (523, 40737), (1101, 19351), (1569, 13579)]