21421113

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1451}}^1$

素因数の和:1517

約数の個数: 32

約数和(自身を含む): 35312640

約数和(自身を除く): 13891527

約数列:

[1, 3, 7, 19, 21, 37, 57, 111, 133, 259, 399, 703, 777, 1451, 2109, 4353, 4921, 10157, 14763, 27569, 30471, 53687, 82707, 161061, 192983, 375809, 578949, 1020053, 1127427, 3060159, 7140371, 21421113]

約数ペア:

[(1, 21421113), (3, 7140371), (7, 3060159), (19, 1127427), (21, 1020053), (37, 578949), (57, 375809), (111, 192983), (133, 161061), (259, 82707), (399, 53687), (703, 30471), (777, 27569), (1451, 14763), (2109, 10157), (4353, 4921)]