19998027

素因数分解:

$3^2\times 7^2\times {\mathrm{137}}^1\times {\mathrm{331}}^1$

素因数の和:488

約数の個数: 36

約数和(自身を含む): 33949656

約数和(自身を除く): 13951629

約数列:

[1, 3, 7, 9, 21, 49, 63, 137, 147, 331, 411, 441, 959, 993, 1233, 2317, 2877, 2979, 6713, 6951, 8631, 16219, 20139, 20853, 45347, 48657, 60417, 136041, 145971, 317429, 408123, 952287, 2222003, 2856861, 6666009, 19998027]

約数ペア:

[(1, 19998027), (3, 6666009), (7, 2856861), (9, 2222003), (21, 952287), (49, 408123), (63, 317429), (137, 145971), (147, 136041), (331, 60417), (411, 48657), (441, 45347), (959, 20853), (993, 20139), (1233, 16219), (2317, 8631), (2877, 6951), (2979, 6713)]