21611315

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{613}}^1\times {\mathrm{641}}^1$

素因数の和:1270

約数の個数: 16

約数和(自身を含む): 28381536

約数和(自身を除く): 6770221

約数列:

[1, 5, 11, 55, 613, 641, 3065, 3205, 6743, 7051, 33715, 35255, 392933, 1964665, 4322263, 21611315]

約数ペア:

[(1, 21611315), (5, 4322263), (11, 1964665), (55, 392933), (613, 35255), (641, 33715), (3065, 7051), (3205, 6743)]