21645981

素因数分解:

$3^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{6737}}^1$

素因数の和:6770

約数の個数: 32

約数和(自身を含む): 38810880

約数和(自身を除く): 17164899

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 119, 153, 189, 357, 459, 1071, 3213, 6737, 20211, 47159, 60633, 114529, 141477, 181899, 343587, 424431, 801703, 1030761, 1273293, 2405109, 3092283, 7215327, 21645981]

約数ペア:

[(1, 21645981), (3, 7215327), (7, 3092283), (9, 2405109), (17, 1273293), (21, 1030761), (27, 801703), (51, 424431), (63, 343587), (119, 181899), (153, 141477), (189, 114529), (357, 60633), (459, 47159), (1071, 20211), (3213, 6737)]