21345189

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{349}}^1$

素因数の和:437

約数の個数: 32

約数和(自身を含む): 31920000

約数和(自身を除く): 10574811

約数列:

[1, 3, 19, 29, 37, 57, 87, 111, 349, 551, 703, 1047, 1073, 1653, 2109, 3219, 6631, 10121, 12913, 19893, 20387, 30363, 38739, 61161, 192299, 245347, 374477, 576897, 736041, 1123431, 7115063, 21345189]

約数ペア:

[(1, 21345189), (3, 7115063), (19, 1123431), (29, 736041), (37, 576897), (57, 374477), (87, 245347), (111, 192299), (349, 61161), (551, 38739), (703, 30363), (1047, 20387), (1073, 19893), (1653, 12913), (2109, 10121), (3219, 6631)]