21805155

素因数分解:

$3^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{3209}}^1$

素因数の和:3371

約数の個数: 24

約数和(自身を含む): 38057760

約数和(自身を除く): 16252605

約数列:

[1, 3, 5, 9, 15, 45, 151, 453, 755, 1359, 2265, 3209, 6795, 9627, 16045, 28881, 48135, 144405, 484559, 1453677, 2422795, 4361031, 7268385, 21805155]

約数ペア:

[(1, 21805155), (3, 7268385), (5, 4361031), (9, 2422795), (15, 1453677), (45, 484559), (151, 144405), (453, 48135), (755, 28881), (1359, 16045), (2265, 9627), (3209, 6795)]