21579649

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1783}}^1$

素因数の和:1829

約数の個数: 24

約数和(自身を含む): 28472640

約数和(自身を除く): 6892991

約数列:

[1, 7, 13, 19, 49, 91, 133, 247, 637, 931, 1729, 1783, 12103, 12481, 23179, 33877, 87367, 162253, 237139, 440401, 1135771, 1659973, 3082807, 21579649]

約数ペア:

[(1, 21579649), (7, 3082807), (13, 1659973), (19, 1135771), (49, 440401), (91, 237139), (133, 162253), (247, 87367), (637, 33877), (931, 23179), (1729, 12481), (1783, 12103)]