80721291

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{202309}}^1$

素因数の和:202338

約数の個数: 16

約数和(自身を含む): 129478400

約数和(自身を除く): 48757109

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 202309, 606927, 1416163, 3843871, 4248489, 11531613, 26907097, 80721291]

約数ペア:

[(1, 80721291), (3, 26907097), (7, 11531613), (19, 4248489), (21, 3843871), (57, 1416163), (133, 606927), (399, 202309)]