21139569

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{653}}^1$

素因数の和:782

約数の個数: 32

約数和(自身を含む): 34531200

約数和(自身を除く): 13391631

約数列:

[1, 3, 9, 11, 27, 33, 99, 109, 297, 327, 653, 981, 1199, 1959, 2943, 3597, 5877, 7183, 10791, 17631, 21549, 32373, 64647, 71177, 193941, 213531, 640593, 782947, 1921779, 2348841, 7046523, 21139569]

約数ペア:

[(1, 21139569), (3, 7046523), (9, 2348841), (11, 1921779), (27, 782947), (33, 640593), (99, 213531), (109, 193941), (297, 71177), (327, 64647), (653, 32373), (981, 21549), (1199, 17631), (1959, 10791), (2943, 7183), (3597, 5877)]