21008769

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{1567}}^1$

素因数の和:1720

約数の個数: 16

約数和(自身を含む): 28976640

約数和(自身を除く): 7967871

約数列:

[1, 3, 41, 109, 123, 327, 1567, 4469, 4701, 13407, 64247, 170803, 192741, 512409, 7002923, 21008769]

約数ペア:

[(1, 21008769), (3, 7002923), (41, 512409), (109, 192741), (123, 170803), (327, 64247), (1567, 13407), (4469, 4701)]