21208496

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{5281}}^1$

素因数の和:5540

約数の個数: 20

約数和(自身を含む): 41262984

約数和(自身を除く): 20054488

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 5281, 10562, 21124, 42248, 84496, 1325531, 2651062, 5302124, 10604248, 21208496]

約数ペア:

[(1, 21208496), (2, 10604248), (4, 5302124), (8, 2651062), (16, 1325531), (251, 84496), (502, 42248), (1004, 21124), (2008, 10562), (4016, 5281)]