21449203797

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{404191}}^1$

素因数の和:404246

約数の個数: 36

約数和(自身を含む): 35111350656

約数和(自身を除く): 13662146859

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 361, 399, 931, 1083, 2527, 2793, 7581, 17689, 53067, 404191, 1212573, 2829337, 7679629, 8488011, 19805359, 23038887, 53757403, 59416077, 145912951, 161272209, 376301821, 437738853, 1021390657, 1128905463, 3064171971, 7149734599, 21449203797]

約数ペア:

[(1, 21449203797), (3, 7149734599), (7, 3064171971), (19, 1128905463), (21, 1021390657), (49, 437738853), (57, 376301821), (133, 161272209), (147, 145912951), (361, 59416077), (399, 53757403), (931, 23038887), (1083, 19805359), (2527, 8488011), (2793, 7679629), (7581, 2829337), (17689, 1212573), (53067, 404191)]