20045289

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1$

素因数の和:297

約数の個数: 32

約数和(自身を含む): 30305664

約数和(自身を除く): 10260375

約数列:

[1, 3, 11, 33, 53, 73, 157, 159, 219, 471, 583, 803, 1727, 1749, 2409, 3869, 5181, 8321, 11461, 11607, 24963, 34383, 42559, 91531, 126071, 127677, 274593, 378213, 607433, 1822299, 6681763, 20045289]

約数ペア:

[(1, 20045289), (3, 6681763), (11, 1822299), (33, 607433), (53, 378213), (73, 274593), (157, 127677), (159, 126071), (219, 91531), (471, 42559), (583, 34383), (803, 24963), (1727, 11607), (1749, 11461), (2409, 8321), (3869, 5181)]