21028284

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{15787}}^1$

素因数の和:15834

約数の個数: 36

約数和(自身を含む): 54594904

約数和(自身を除く): 33566620

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 74, 111, 148, 222, 333, 444, 666, 1332, 15787, 31574, 47361, 63148, 94722, 142083, 189444, 284166, 568332, 584119, 1168238, 1752357, 2336476, 3504714, 5257071, 7009428, 10514142, 21028284]

約数ペア:

[(1, 21028284), (2, 10514142), (3, 7009428), (4, 5257071), (6, 3504714), (9, 2336476), (12, 1752357), (18, 1168238), (36, 584119), (37, 568332), (74, 284166), (111, 189444), (148, 142083), (222, 94722), (333, 63148), (444, 47361), (666, 31574), (1332, 15787)]