21208502

素因数分解:

$2^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{9649}}^1$

素因数の和:9815

約数の個数: 16

約数和(自身を含む): 36592800

約数和(自身を除く): 15384298

約数列:

[1, 2, 7, 14, 157, 314, 1099, 2198, 9649, 19298, 67543, 135086, 1514893, 3029786, 10604251, 21208502]

約数ペア:

[(1, 21208502), (2, 10604251), (7, 3029786), (14, 1514893), (157, 135086), (314, 67543), (1099, 19298), (2198, 9649)]