21490709471

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{28229}}^1\times {\mathrm{9887}}^1$

素因数の和:38134

約数の個数: 16

約数和(自身を含む): 26797271040

約数和(自身を除く): 5306561569

約数列:

[1, 7, 11, 77, 9887, 28229, 69209, 108757, 197603, 310519, 761299, 2173633, 279100123, 1953700861, 3070101353, 21490709471]

約数ペア:

[(1, 21490709471), (7, 3070101353), (11, 1953700861), (77, 279100123), (9887, 2173633), (28229, 761299), (69209, 310519), (108757, 197603)]