21419289

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{971}}^1$

素因数の和:1042

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 12795111

約数列:

[1, 3, 9, 19, 27, 43, 57, 129, 171, 387, 513, 817, 971, 1161, 2451, 2913, 7353, 8739, 18449, 22059, 26217, 41753, 55347, 125259, 166041, 375777, 498123, 793307, 1127331, 2379921, 7139763, 21419289]

約数ペア:

[(1, 21419289), (3, 7139763), (9, 2379921), (19, 1127331), (27, 793307), (43, 498123), (57, 375777), (129, 166041), (171, 125259), (387, 55347), (513, 41753), (817, 26217), (971, 22059), (1161, 18449), (2451, 8739), (2913, 7353)]