21427065

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{307}}^1$

素因数の和:379

約数の個数: 64

約数和(自身を含む): 42577920

約数和(自身を除く): 21150855

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 47, 55, 99, 135, 141, 165, 235, 297, 307, 423, 495, 517, 705, 921, 1269, 1485, 1535, 1551, 2115, 2585, 2763, 3377, 4605, 4653, 6345, 7755, 8289, 10131, 13815, 13959, 14429, 16885, 23265, 30393, 41445, 43287, 50655, 69795, 72145, 91179, 129861, 151965, 158719, 216435, 389583, 455895, 476157, 649305, 793595, 1428471, 1947915, 2380785, 4285413, 7142355, 21427065]

約数ペア:

[(1, 21427065), (3, 7142355), (5, 4285413), (9, 2380785), (11, 1947915), (15, 1428471), (27, 793595), (33, 649305), (45, 476157), (47, 455895), (55, 389583), (99, 216435), (135, 158719), (141, 151965), (165, 129861), (235, 91179), (297, 72145), (307, 69795), (423, 50655), (495, 43287), (517, 41445), (705, 30393), (921, 23265), (1269, 16885), (1485, 14429), (1535, 13959), (1551, 13815), (2115, 10131), (2585, 8289), (2763, 7755), (3377, 6345), (4605, 4653)]