20568465

素因数分解:

$3^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1009}}^1$

素因数の和:1174

約数の個数: 32

約数和(自身を含む): 36844800

約数和(自身を除く): 16276335

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 151, 453, 755, 1009, 1359, 2265, 3027, 4077, 5045, 6795, 9081, 15135, 20385, 27243, 45405, 136215, 152359, 457077, 761795, 1371231, 2285385, 4113693, 6856155, 20568465]

約数ペア:

[(1, 20568465), (3, 6856155), (5, 4113693), (9, 2285385), (15, 1371231), (27, 761795), (45, 457077), (135, 152359), (151, 136215), (453, 45405), (755, 27243), (1009, 20385), (1359, 15135), (2265, 9081), (3027, 6795), (4077, 5045)]