21801087

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{193}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 39706368

約数和(自身を除く): 17905281

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 163, 193, 231, 489, 579, 693, 1141, 1351, 1467, 1737, 1793, 2123, 3423, 4053, 5379, 6369, 10269, 12159, 12551, 14861, 16137, 19107, 31459, 37653, 44583, 94377, 112959, 133749, 220213, 283131, 346049, 660639, 1038147, 1981917, 2422343, 3114441, 7267029, 21801087]

約数ペア:

[(1, 21801087), (3, 7267029), (7, 3114441), (9, 2422343), (11, 1981917), (21, 1038147), (33, 660639), (63, 346049), (77, 283131), (99, 220213), (163, 133749), (193, 112959), (231, 94377), (489, 44583), (579, 37653), (693, 31459), (1141, 19107), (1351, 16137), (1467, 14861), (1737, 12551), (1793, 12159), (2123, 10269), (3423, 6369), (4053, 5379)]