20638215

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{35279}}^1$

素因数の和:35303

約数の個数: 24

約数和(自身を含む): 38525760

約数和(自身を除く): 17887545

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 195, 585, 35279, 105837, 176395, 317511, 458627, 529185, 1375881, 1587555, 2293135, 4127643, 6879405, 20638215]

約数ペア:

[(1, 20638215), (3, 6879405), (5, 4127643), (9, 2293135), (13, 1587555), (15, 1375881), (39, 529185), (45, 458627), (65, 317511), (117, 176395), (195, 105837), (585, 35279)]