21441315

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{5519}}^1$

素因数の和:5571

約数の個数: 32

約数和(自身を含む): 40273920

約数和(自身を除く): 18832605

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 259, 555, 777, 1295, 3885, 5519, 16557, 27595, 38633, 82785, 115899, 193165, 204203, 579495, 612609, 1021015, 1429421, 3063045, 4288263, 7147105, 21441315]

約数ペア:

[(1, 21441315), (3, 7147105), (5, 4288263), (7, 3063045), (15, 1429421), (21, 1021015), (35, 612609), (37, 579495), (105, 204203), (111, 193165), (185, 115899), (259, 82785), (555, 38633), (777, 27595), (1295, 16557), (3885, 5519)]