21508767

素因数分解:

$3^3\times 7^1\times {\mathrm{317}}^1\times {\mathrm{359}}^1$

素因数の和:692

約数の個数: 32

約数和(自身を含む): 36633600

約数和(自身を除く): 15124833

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 317, 359, 951, 1077, 2219, 2513, 2853, 3231, 6657, 7539, 8559, 9693, 19971, 22617, 59913, 67851, 113803, 341409, 796621, 1024227, 2389863, 3072681, 7169589, 21508767]

約数ペア:

[(1, 21508767), (3, 7169589), (7, 3072681), (9, 2389863), (21, 1024227), (27, 796621), (63, 341409), (189, 113803), (317, 67851), (359, 59913), (951, 22617), (1077, 19971), (2219, 9693), (2513, 8559), (2853, 7539), (3231, 6657)]