21208371

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{2351}}^1$

素因数の和:2482

約数の個数: 16

約数和(自身を含む): 29503488

約数和(自身を除く): 8295117

約数列:

[1, 3, 31, 93, 97, 291, 2351, 3007, 7053, 9021, 72881, 218643, 228047, 684141, 7069457, 21208371]

約数ペア:

[(1, 21208371), (3, 7069457), (31, 684141), (93, 228047), (97, 218643), (291, 72881), (2351, 9021), (3007, 7053)]