21551643

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{977}}^1$

素因数の和:1048

約数の個数: 32

約数和(自身を含む): 34425600

約数和(自身を除く): 12873957

約数列:

[1, 3, 9, 19, 27, 43, 57, 129, 171, 387, 513, 817, 977, 1161, 2451, 2931, 7353, 8793, 18563, 22059, 26379, 42011, 55689, 126033, 167067, 378099, 501201, 798209, 1134297, 2394627, 7183881, 21551643]

約数ペア:

[(1, 21551643), (3, 7183881), (9, 2394627), (19, 1134297), (27, 798209), (43, 501201), (57, 378099), (129, 167067), (171, 126033), (387, 55689), (513, 42011), (817, 26379), (977, 22059), (1161, 18563), (2451, 8793), (2931, 7353)]