21722225

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:222

約数の個数: 48

約数和(自身を含む): 33331200

約数和(自身を除く): 11608975

約数列:

[1, 5, 7, 19, 25, 35, 47, 95, 133, 139, 175, 235, 329, 475, 665, 695, 893, 973, 1175, 1645, 2641, 3325, 3475, 4465, 4865, 6251, 6533, 8225, 13205, 18487, 22325, 24325, 31255, 32665, 45731, 66025, 92435, 124127, 156275, 163325, 228655, 462175, 620635, 868889, 1143275, 3103175, 4344445, 21722225]

約数ペア:

[(1, 21722225), (5, 4344445), (7, 3103175), (19, 1143275), (25, 868889), (35, 620635), (47, 462175), (95, 228655), (133, 163325), (139, 156275), (175, 124127), (235, 92435), (329, 66025), (475, 45731), (665, 32665), (695, 31255), (893, 24325), (973, 22325), (1175, 18487), (1645, 13205), (2641, 8225), (3325, 6533), (3475, 6251), (4465, 4865)]