20405835

素因数分解:

$3^2\times 5^1\times {\mathrm{547}}^1\times {\mathrm{829}}^1$

素因数の和:1387

約数の個数: 24

約数和(自身を含む): 35477520

約数和(自身を除く): 15071685

約数列:

[1, 3, 5, 9, 15, 45, 547, 829, 1641, 2487, 2735, 4145, 4923, 7461, 8205, 12435, 24615, 37305, 453463, 1360389, 2267315, 4081167, 6801945, 20405835]

約数ペア:

[(1, 20405835), (3, 6801945), (5, 4081167), (9, 2267315), (15, 1360389), (45, 453463), (547, 37305), (829, 24615), (1641, 12435), (2487, 8205), (2735, 7461), (4145, 4923)]