20863311

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{52289}}^1$

素因数の和:52318

約数の個数: 16

約数和(自身を含む): 33465600

約数和(自身を除く): 12602289

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 52289, 156867, 366023, 993491, 1098069, 2980473, 6954437, 20863311]

約数ペア:

[(1, 20863311), (3, 6954437), (7, 2980473), (19, 1098069), (21, 993491), (57, 366023), (133, 156867), (399, 52289)]