21802221

素因数分解:

$3^2\times 7^1\times {\mathrm{271}}^1\times {\mathrm{1277}}^1$

素因数の和:1561

約数の個数: 24

約数和(自身を含む): 36152064

約数和(自身を除く): 14349843

約数列:

[1, 3, 7, 9, 21, 63, 271, 813, 1277, 1897, 2439, 3831, 5691, 8939, 11493, 17073, 26817, 80451, 346067, 1038201, 2422469, 3114603, 7267407, 21802221]

約数ペア:

[(1, 21802221), (3, 7267407), (7, 3114603), (9, 2422469), (21, 1038201), (63, 346067), (271, 80451), (813, 26817), (1277, 17073), (1897, 11493), (2439, 8939), (3831, 5691)]