19953325

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{353}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 31605120

約数和(自身を除く): 11651795

約数列:

[1, 5, 7, 17, 19, 25, 35, 85, 95, 119, 133, 175, 323, 353, 425, 475, 595, 665, 1615, 1765, 2261, 2471, 2975, 3325, 6001, 6707, 8075, 8825, 11305, 12355, 30005, 33535, 42007, 46949, 56525, 61775, 114019, 150025, 167675, 210035, 234745, 570095, 798133, 1050175, 1173725, 2850475, 3990665, 19953325]

約数ペア:

[(1, 19953325), (5, 3990665), (7, 2850475), (17, 1173725), (19, 1050175), (25, 798133), (35, 570095), (85, 234745), (95, 210035), (119, 167675), (133, 150025), (175, 114019), (323, 61775), (353, 56525), (425, 46949), (475, 42007), (595, 33535), (665, 30005), (1615, 12355), (1765, 11305), (2261, 8825), (2471, 8075), (2975, 6707), (3325, 6001)]