21955241

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:429

約数の個数: 32

約数和(自身を含む): 29568000

約数和(自身を除く): 7612759

約数列:

[1, 7, 11, 19, 43, 77, 133, 209, 301, 349, 473, 817, 1463, 2443, 3311, 3839, 5719, 6631, 8987, 15007, 26873, 46417, 62909, 72941, 105049, 165077, 285133, 510587, 1155539, 1995931, 3136463, 21955241]

約数ペア:

[(1, 21955241), (7, 3136463), (11, 1995931), (19, 1155539), (43, 510587), (77, 285133), (133, 165077), (209, 105049), (301, 72941), (349, 62909), (473, 46417), (817, 26873), (1463, 15007), (2443, 8987), (3311, 6631), (3839, 5719)]