16721425

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1$

素因数の和:190

約数の個数: 48

約数和(自身を含む): 25712640

約数和(自身を除く): 8991215

約数列:

[1, 5, 7, 19, 25, 35, 47, 95, 107, 133, 175, 235, 329, 475, 535, 665, 749, 893, 1175, 1645, 2033, 2675, 3325, 3745, 4465, 5029, 6251, 8225, 10165, 14231, 18725, 22325, 25145, 31255, 35203, 50825, 71155, 95551, 125725, 156275, 176015, 355775, 477755, 668857, 880075, 2388775, 3344285, 16721425]

約数ペア:

[(1, 16721425), (5, 3344285), (7, 2388775), (19, 880075), (25, 668857), (35, 477755), (47, 355775), (95, 176015), (107, 156275), (133, 125725), (175, 95551), (235, 71155), (329, 50825), (475, 35203), (535, 31255), (665, 25145), (749, 22325), (893, 18725), (1175, 14231), (1645, 10165), (2033, 8225), (2675, 6251), (3325, 5029), (3745, 4465)]