15515875

素因数分解:

$5^3\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:220

約数の個数: 32

約数和(自身を含む): 20966400

約数和(自身を除く): 5450525

約数列:

[1, 5, 19, 25, 47, 95, 125, 139, 235, 475, 695, 893, 1175, 2375, 2641, 3475, 4465, 5875, 6533, 13205, 17375, 22325, 32665, 66025, 111625, 124127, 163325, 330125, 620635, 816625, 3103175, 15515875]

約数ペア:

[(1, 15515875), (5, 3103175), (19, 816625), (25, 620635), (47, 330125), (95, 163325), (125, 124127), (139, 111625), (235, 66025), (475, 32665), (695, 22325), (893, 17375), (1175, 13205), (2375, 6533), (2641, 5875), (3475, 4465)]