21535255

素因数分解:

$5^1\times 7^3\times {\mathrm{29}}^1\times {\mathrm{433}}^1$

素因数の和:488

約数の個数: 32

約数和(自身を含む): 31248000

約数和(自身を除く): 9712745

約数列:

[1, 5, 7, 29, 35, 49, 145, 203, 245, 343, 433, 1015, 1421, 1715, 2165, 3031, 7105, 9947, 12557, 15155, 21217, 49735, 62785, 87899, 106085, 148519, 439495, 615293, 742595, 3076465, 4307051, 21535255]

約数ペア:

[(1, 21535255), (5, 4307051), (7, 3076465), (29, 742595), (35, 615293), (49, 439495), (145, 148519), (203, 106085), (245, 87899), (343, 62785), (433, 49735), (1015, 21217), (1421, 15155), (1715, 12557), (2165, 9947), (3031, 7105)]