21221936

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69809}}^1$

素因数の和:69836

約数の個数: 20

約数和(自身を含む): 43282200

約数和(自身を除く): 22060264

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69809, 139618, 279236, 558472, 1116944, 1326371, 2652742, 5305484, 10610968, 21221936]

約数ペア:

[(1, 21221936), (2, 10610968), (4, 5305484), (8, 2652742), (16, 1326371), (19, 1116944), (38, 558472), (76, 279236), (152, 139618), (304, 69809)]