21519405

素因数分解:

$3^3\times 5^1\times {\mathrm{159403}}^1$

素因数の和:159417

約数の個数: 16

約数和(自身を含む): 38256960

約数和(自身を除く): 16737555

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 159403, 478209, 797015, 1434627, 2391045, 4303881, 7173135, 21519405]

約数ペア:

[(1, 21519405), (3, 7173135), (5, 4303881), (9, 2391045), (15, 1434627), (27, 797015), (45, 478209), (135, 159403)]