21413007

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{53}}^2$

素因数の和:141

約数の個数: 54

約数和(自身を含む): 39601016

約数和(自身を除く): 18188009

約数列:

[1, 3, 7, 9, 11, 21, 33, 53, 63, 77, 99, 121, 159, 231, 363, 371, 477, 583, 693, 847, 1089, 1113, 1749, 2541, 2809, 3339, 4081, 5247, 6413, 7623, 8427, 12243, 19239, 19663, 25281, 30899, 36729, 44891, 57717, 58989, 92697, 134673, 176967, 216293, 278091, 339889, 404019, 648879, 1019667, 1946637, 2379223, 3059001, 7137669, 21413007]

約数ペア:

[(1, 21413007), (3, 7137669), (7, 3059001), (9, 2379223), (11, 1946637), (21, 1019667), (33, 648879), (53, 404019), (63, 339889), (77, 278091), (99, 216293), (121, 176967), (159, 134673), (231, 92697), (363, 58989), (371, 57717), (477, 44891), (583, 36729), (693, 30899), (847, 25281), (1089, 19663), (1113, 19239), (1749, 12243), (2541, 8427), (2809, 7623), (3339, 6413), (4081, 5247)]