15718821

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:241

約数の個数: 32

約数和(自身を含む): 23113728

約数和(自身を除く): 7394907

約数列:

[1, 3, 23, 37, 47, 69, 111, 131, 141, 393, 851, 1081, 1739, 2553, 3013, 3243, 4847, 5217, 6157, 9039, 14541, 18471, 39997, 111481, 119991, 141611, 227809, 334443, 424833, 683427, 5239607, 15718821]

約数ペア:

[(1, 15718821), (3, 5239607), (23, 683427), (37, 424833), (47, 334443), (69, 227809), (111, 141611), (131, 119991), (141, 111481), (393, 39997), (851, 18471), (1081, 14541), (1739, 9039), (2553, 6157), (3013, 5217), (3243, 4847)]