21138285

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{5441}}^1$

素因数の和:5493

約数の個数: 32

約数和(自身を含む): 39704832

約数和(自身を除く): 18566547

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295, 3885, 5441, 16323, 27205, 38087, 81615, 114261, 190435, 201317, 571305, 603951, 1006585, 1409219, 3019755, 4227657, 7046095, 21138285]

約数ペア:

[(1, 21138285), (3, 7046095), (5, 4227657), (7, 3019755), (15, 1409219), (21, 1006585), (35, 603951), (37, 571305), (105, 201317), (111, 190435), (185, 114261), (259, 81615), (555, 38087), (777, 27205), (1295, 16323), (3885, 5441)]