21948165

素因数分解:

$3^4\times 5^1\times {\mathrm{54193}}^1$

素因数の和:54210

約数の個数: 20

約数和(自身を含む): 39344844

約数和(自身を除く): 17396679

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 54193, 162579, 270965, 487737, 812895, 1463211, 2438685, 4389633, 7316055, 21948165]

約数ペア:

[(1, 21948165), (3, 7316055), (5, 4389633), (9, 2438685), (15, 1463211), (27, 812895), (45, 487737), (81, 270965), (135, 162579), (405, 54193)]