21683865

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{2129}}^1$

素因数の和:2241

約数の個数: 32

約数和(自身を含む): 40078080

約数和(自身を除く): 18394215

約数列:

[1, 3, 5, 7, 15, 21, 35, 97, 105, 291, 485, 679, 1455, 2037, 2129, 3395, 6387, 10185, 10645, 14903, 31935, 44709, 74515, 206513, 223545, 619539, 1032565, 1445591, 3097695, 4336773, 7227955, 21683865]

約数ペア:

[(1, 21683865), (3, 7227955), (5, 4336773), (7, 3097695), (15, 1445591), (21, 1032565), (35, 619539), (97, 223545), (105, 206513), (291, 74515), (485, 44709), (679, 31935), (1455, 14903), (2037, 10645), (2129, 10185), (3395, 6387)]