216945981

素因数分解:

$3^2\times 7^2\times {\mathrm{83}}^1\times {\mathrm{5927}}^1$

素因数の和:6030

約数の個数: 36

約数和(自身を含む): 368982432

約数和(自身を除く): 152036451

約数列:

[1, 3, 7, 9, 21, 49, 63, 83, 147, 249, 441, 581, 747, 1743, 4067, 5229, 5927, 12201, 17781, 36603, 41489, 53343, 124467, 290423, 373401, 491941, 871269, 1475823, 2613807, 3443587, 4427469, 10330761, 24105109, 30992283, 72315327, 216945981]

約数ペア:

[(1, 216945981), (3, 72315327), (7, 30992283), (9, 24105109), (21, 10330761), (49, 4427469), (63, 3443587), (83, 2613807), (147, 1475823), (249, 871269), (441, 491941), (581, 373401), (747, 290423), (1743, 124467), (4067, 53343), (5229, 41489), (5927, 36603), (12201, 17781)]