15988040

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{1277}}^1$

素因数の和:1601

約数の個数: 32

約数和(自身を含む): 36116280

約数和(自身を除く): 20128240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1277, 1565, 2504, 2554, 3130, 5108, 6260, 6385, 10216, 12520, 12770, 25540, 51080, 399701, 799402, 1598804, 1998505, 3197608, 3997010, 7994020, 15988040]

約数ペア:

[(1, 15988040), (2, 7994020), (4, 3997010), (5, 3197608), (8, 1998505), (10, 1598804), (20, 799402), (40, 399701), (313, 51080), (626, 25540), (1252, 12770), (1277, 12520), (1565, 10216), (2504, 6385), (2554, 6260), (3130, 5108)]